Sort by
Relevancy

Free Stories

100%
Bitch Maker Part 3
"Alex bring me some juice." Sammie said, rolling over in bed and hugging her pillow. "Yes mistress!" I replied, with enthusiasm. I crawled out of bed and walked down the hall, on the way past Tim's room I looked in on him. He lay there silent, his cock trapped in it's new c... Read full Story
shemale lover 2011-09-23 4,460 anal sex licking facial domination
50%
TEEN ET LE THÉRAPEUTE SCOLAIRE ⚧️ ⚧️
J'étais sur le point de quitter le travail tôt quand mon téléphone a sonné. C'était l'un des administrateurs de l'école. Ils ont également été mes secrétaires. « M. Caldwell ? Un étudiant est ici pour vous voir. Non, je n'avais jamais vu cet étudiant auparavant. L'étudiant n'avait pas voulu décrire ... Read full Story
Femboy 2021 2023-04-16 1,013 Big Cock Lingerie domination sissification poule mouillé sexe anal
50%
RANCUNE MATERNELLE ⚧️ ⚧️
"... Dois-je être ici?" Cole a demandé anxieusement. Sa mère s'était détournée de lui, occupée à sortir plusieurs plateaux de lasagnes du four. "Je peux rester chez un ami ou quelque chose comme ça..." Christina, comme sa mère s'appelait, soupira profondément. "C'e... Read full Story
Femboy 2021 2023-03-19 1,370 Teen (18+) Blowjob Big Cock Futanari cum in mouth Mère Futa et Fils inceste
60%
The Creators: Book One by
Chapter One: The Life Giver BRANDON My twin sister is dead, but she’s not gone. Death is a tragedy in the remote village of Towerhead, but it’s not a rarity. Farming accidents, disease, famine, natural disasters, you name it, it kills people in Towerhead. So, six years ago, when the oxen-pul... Read full Story
sagga 2018-09-18 30,893 Teen (18+)
90%
Becoming a Drag Queen
I was thrilled when my boss told me he was sending me to San Francisco for a conference. It was a location on my "Top 10 places I wanted to go". I went online and Googled the major attractions and tourist "must sees in San Francisco. The conference was Wednesday to Friday and I figure... Read full Story
shemale lover 2012-03-01 14,531 first time sucking fuck domination
100%
HOW ONE PEEPING TOM MORNING TURNED ME INTO A SHEMALE SISSY BITCH
It was while cutting across his back trailer park lawn around 7pm on misty July Saturday evening, when I first discovered that Mr. Parker was really a fag. How else could you describe a man wearing a long blonde wig on his head while below he wore only a large somehow stuffed pink lacey woman's bra ... Read full Story
CDDIXIE4U 2019-01-08 14,641 Teen (18+) Crossdresser Amateur Cumshot Masturbation Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Homemade Compilation Vintage cum in mouth
80%
Getting Fucked by Sasquatch
Bill was about to show up, I had known him from a chat room for years now. I was in his town for work and we had set up this date so we could finally meet each other. I heard a hard knock at the door and when I swung it open, I just stood there in awe. It wasn’t the big beard or really long hair tha... Read full Story
pennypenny 2020-08-21 6,434 Crossdresser Bareback Creampie Fetish Blowjob Big Cock redhead domination Guy Fucks Shemale pov Ass to Mouth cum in mouth
50%
She also conquered my soul...
Initiation in a new era... Almost three months since I offered my virginity to a wonderfull he-woman, Selmi... unfortunately I had to cancel the second day we planned to spend together with my LORDESS because I quitted the town where we met the day before. Since, only few summer fling messages...... Read full Story
hippocampus_171 2022-11-22 4,500 Crossdresser Amateur Cumshot Masturbation Creampie Blowjob redhead domination Sex Toys Mature Homemade Ass to Mouth cum in mouth
100%
ROBERTO’S SECRET by Spanky De Bautumn
Cody Daniels was only trying to help her country; she never dreamed things would come to this. She was patriotic and felt compelled to do whatever asked of her to aid in the capture of the terrorist known only as "Roberto". But lying in his bed, bound and gagged, Cody wondered why she let herself go... Read full Story
SpankydeBautumn 2021-01-22 5,393 Crossdresser Cumshot Creampie Fetish domination Guy Fucks Shemale
91%
HOW MY AUNT AND SISSY NEPHEW CHANGED MY LIFE FOREVER! (fictional
It was the very first night of my month long North Carolina July summer vacation stay when my Aunt Meg suddenly entered the bedroom that I was temporarily sharing with my younger cousin Rudy. Being so openly effeminine in his body language,voice and looks, I had already planted such dirty thoughts ... Read full Story
CDDIXIE4U 2019-01-08 34,997 Teen (18+) Crossdresser Cumshot Masturbation Bareback Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Lingerie domination Homemade Compilation cum in mouth shemale + shemale
80%
Mis inicios y los vecinos mirones.
Hola chicas, mi nombre es Sandra, recuerdo que en secundaria era de los primeros que tenía computadora e internet por lo que me inicie viendo las primeras páginas porno, algo que me gustaba mucho era ver a las chicas vestidas con minifaldas, pantimedias y tacones. Tenia cierta atracción hacia las pr... Read full Story
sexycd176 2023-04-15 1,586 Stockings Teen (18+) Amateur Latina Homemade
66%
Tgirl
The year is 2044. My name is Robert. I am 26. Light brown hair. Dark brown eyes. 5' 9", 122 pounds. I work for a supercomputer research and development firm. Like many young men at the leading edge of technology, I am transgendered. My counselor is Dr. Elizabeth Paris. Under her con... Read full Story
shemale lover 2011-11-26 7,716 shemale transformation domination
22%
Just me...
When I first started to get high, I was such a good freak. I started taking pictures of myself in panties and lingerie, taking pictures of my dick and showing the world, showing off my tight little asshole, just trying to become a porn star. I still want to be a porn star because I know that I would... Read full Story
AllOfMe 2018-06-01 4,260 Teen (18+) Ladyboy redhead Guy Fucks Shemale Interracial Ass to Mouth cum in mouth
100%
Catching Up
It was with mixed emotions that I listened to the message on my voice mail. It was the familiar sound of Mark, a long time friend whose call I had missed earlier that afternoon. Now as I heard it, for the third time, I felt my stomach slowly relax from the uneasy twist that had taken hold the minute... Read full Story
shemale lover 2012-06-04 3,996 anal sex Creampie fingering
100%
Meeting Amanda Ch. 2 - The Next Day
After a hot evening together, the story continues https://www.ashemaletube.com/story/meeting-amanda-6595/ ------------------------------------------------------------------------------------------------------------- “I could really use a shower,” Amanda said while she... Read full Story
rforasht 2022-09-07 4,745 Masturbation Shemale and Girl redhead Guy Fucks Shemale cum eating anal creampie couple & shemale
100%
Valentina Ginger hooker from Brazil in Edinburgh
I had just arrived in Edinburgh and still had a few hours, so I wanted to use the time and checked the relevant pages. Immediately my eyes fell on the light-skinned, red-haired sex goddess Valentina. When I also read the promising text "....and you want to get fucked properly, here I am!" There was ... Read full Story
Bigpruegel69 2024-10-20 1,712 anal Stockings Creampie Shemale Fucks Guy Blowjob redhead cum in mouth
100%
the orgiastic fever of a trans-milf
Simulating a woman, or the orgiastic fever of a trans-milf It's been two months since I moved to the megapolis, where I've discovered several places where the third gender goes. One of my first explorations was a huge lingerie shop in a MALL; I wanted to buy some sexy stuff without being noticed ... Read full Story
hippocampus_171 2024-09-04 2,819 anal Amateur Cumshot Creampie Shemale Fucks Guy Latex Sex Toys Mature small cock
88%
Purple Kiss, part 1
It happened during a week long trip for work. By the third night in a strange city I had grown tired of the hotel bar and broke away from my work colleagues for change of scenery. I told my coworkers that I was going to bed then quickly made my escape. The night was warm so I decided to take my o... Read full Story
Transadmirer 2016-01-02 10,555 Creampie Shemale Fucks Guy Fetish cum domination gangbang sex
100%
LE CONTRAT DE MARGOT
Madame Margot Elizabeth Stott était l'objet de mes désirs, des désirs très secrets ; désire que je n'aie jamais eu l'intention de la laisser - ou qui que ce soit d'autre - le découvrir. Mme Margot Elizabeth Stott avait, au moment où je l'ai connue pour la première fois, environ 45 ans, peut-être ... Read full Story
Femboy 2021 2023-02-16 1,584 Stockings Crossdresser Cumshot Fetish Lingerie domination Sex Toys cum in mouth
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,743 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
100%
A Fairy Tale Part 2
=-=-Chapter Six-=-= I woke up sometime later and I was feeling better, even a little hungry actually, and I wanted a shower and I needed to pee and...I cocked my head as I heard the unmistakable sounds of Mistress Stacy's bed moving. She had a large one, king sized, with old springs or somethi... Read full Story
shemale lover 2011-12-06 7,164 Creampie Big Cock ass fucking
100%
HypnoSissy Partie 2
DEVENIR CUM SLUT Une fois habillé et James parti, Rose demanda: "Vous êtes-vous amusé?" Je hochai la tête. "Oui, bien que je me sente un peu gay." Rose secoua la tête. "Brian," gay "est juste un mot, comme" lesbienne ", ou" faggot "ou" gouine ". J'ai mangé la chatte et demandé aux filles... Read full Story
Femboy 2021 2023-01-24 4,372 Stockings Teen (18+) Crossdresser Fetish Blowjob Big Cock Lingerie domination cum in mouth
50%
HypnoSissy partie 5
SUCER ECLESIASTIQUE Dimanche après-midi, je faisais mes devoirs d'école, j'essayais de me sortir de ma tête le baptême de jerk du cercle d'hier soir, ainsi que l'inconnu qui m'avait donné sa carte ... qui ne portait qu'un numéro ... pas de nom ... pas d'adresse ... pas d'affaire. Donc, même s... Read full Story
Femboy 2021 2023-01-26 913 Teen (18+) Crossdresser Fetish Blowjob Big Cock Shemale and Girl domination
94%
Southern Hospitality Ch. 01
XtinaSmith2017 Ash gawped at his mother, incredulous as to what she had just said. He understood the basic premise of what had happened, but the reasoning she must have had absolutely baffled him. "Why?! Why would you do that?!" He pleaded, voice light and desperate. She shrugged, looking acr... Read full Story
Gwapo67 2022-05-16 7,719 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature
100%
A Turkish Delight
My export business was beginning to take off as I was now on my second over sea's trip. I was doing business with the Turkish government and I also saw it as an opportunity to explore more my fascination of cross-dressing. I would be visiting a country where I was not know and I would blend in with ... Read full Story
shemale lover 2012-07-15 3,317 Creampie oral facial domination crossdressing
91%
Southern Hospitality Ch. 02
XtinaSmith2017 Laura felt herself lifted lazily from the arms of sleep, her body relaxed and floating on a small cloud of pleasure, her mind filled with images, sensations, not pulled from whatever dream she had just been having but instead, memories, memories from the night before. Memories of... Read full Story
Gwapo67 2022-05-16 5,112 Bareback Creampie Shemale Fucks Guy Big Cock Mature
100%
Philippines Vacation with a Dominant Big Cock Ladyboy
I am still in a state of unbelievable joy that I was lucky enough to experience this but I 100% did and I can’t stop thinking about it as I thought things like this only happen in porn or fantasies. Buckle up because this is a wild one and happened in Manila May 2024. I had the opportunity to vi... Read full Story
AllenB 2024-07-14 7,614 Bareback Creampie Shemale Fucks Guy Big Cock Ladyboy Guy Fucks Shemale cum in mouth domination act filipina ts filipina ladyboy
93%
Sissy schoolgirl and her black daddy
I can't believe this is happening right now. Here I am, a 16 year old white boy dressed in the sluttiest schoolgirl costume and makeup I have ever seen, being barebacked by an older, married black man. How'd I get so lucky?! Let me start at the beginning... It was summer time. As always I spent m... Read full Story
shemale lover 2013-06-22 40,577 Teen (18+) Bareback Creampie Lingerie ass fucking Interracial cd
50%
C'EST LA PATRONNE ⚧️ ⚧️
Le rêve est mort. L'écriture était ma passion, mais cela n'a jamais servi à rien. La réalité a une mauvaise façon de vous rattraper, déchiquetant vos désirs dans son sillage. Ce cycle d'épargne et de vie de ces économies s'est progressivement révélé intenable et maintenant, à vingt-cinq ans, j'ai... Read full Story
Femboy 2021 2023-03-30 1,826 Big Tits Cumshot Creampie Blowjob Big Cock domination cum in mouth analsex femme plus âgée Futanari futa sur femme
50%
The Wizard's Semen
The forest was dense, thick branches hid the way ahead forcing the four women to push through gaps that weren't really there as the foliage scraped and scratched them, making life very uncomfortable. "This can't be the way, there's something wrong" said Minerva from behind the leader, Cara... Read full Story
shemale lover 2011-11-16 4,171 orgasm facial deep throat fucking
100%
Donna is Donna but John is Joan
I’m an average size guy. Five ten, almost thin, and at thirty years of age, very little facial hair. My beautiful wife was four inches shorter than me, thinner and as she had pointed out many times before, my arms were as skinny as hers. She always talked about me dressing up girly with her be... Read full Story
shemale lover 2012-10-28 3,777 anal Creampie facial oral sex
100%
Pretty Woman
Tyler was as nervous as anyone could be. Hazel eyes darted for the door as silky black stockings slid up smooth white legs to meet garter straps attached near lacy white panties. Next came the bra, straps catching on skin slightly sticky with perspiration. Heart pounding as the black pencil skirt gl... Read full Story
shemale lover 2012-12-22 9,191 Stockings Teen (18+) Crossdresser sucking heels
50%
MON SECRET RÉVÉLÉ ⚧️ ⚧️
C'etait ma propre faute. Comment ai-je pu être si stupide ? Je m'appelle Karl. J'ai démarré une entreprise Internet il y a douze ans. J'avais travaillé comme représentant d'un fabricant pour une maison de courtage spécialisée dans les marchandises importées. Je pensais que mon entreprise ne faisa... Read full Story
Femboy 2021 2023-03-30 1,363 Group Sex Creampie Big Cock Lingerie Guy Fucks Shemale cum in mouth feminisation forcé cage de chateté domination fémi
50%
LE PROGRAMME D'ÉCHANGE SISSY ⚧️ ⚧️
Kristy a travaillé pour Le Matriarcat. Cela semblait plus officiel que ça ne l'était vraiment. Comme si c'était un "Nouvel Ordre Mondial". C'était en fait un club dirigé par des femmes spécialisées dans certains services que les hommes paient grassement. Cela pourrait être appelé prostitution selon ... Read full Story
Femboy 2021 2023-03-25 1,717 Teen (18+) Cumshot Big Cock gangbang Interracial Sex Toys gloryhole cum in mouth femination forcé poule mouillé Maitress bdsm poule mouillé
85%
Becoming a Shemale's Bitch
I just got into town and spent the whole day moving in and cleaning my new apartment. I didn't have much furniture but the place needed a lot of cleaning. I saw their was a bar a few blocks away from my apartment and decided to go out for something to eat. It was around five o'clock when I walk... Read full Story
metamafia 2012-12-21 120,158 hardcore Cumshot sucking bdsm domination
75%
Intro to a Dream Made Real
Jim had known growing up that he enjoyed bi-sexuality. But he had never found a man attractive the way women were to him. For example, he never found himself wanting to kiss a man, but he liked holding a hard cock as much as he enjoyed touching a wet pussy. He really enjoyed sucking a dick as much a... Read full Story
shemale lover 2013-01-22 6,178 hardcore sucking domination bondage foot fetish
50%
"SISSIFIED": 12 JOURS DE SISSY-MAS
JOUR 1: mardi 25 C'était le matin de Noël quand j'ai entendu frapper à ma porte, ce qui était, bien sûr, très étrange à dix heures du matin. À midi, j'allais chez ma famille pour Noël, et j'avais rarement des visiteurs inattendus. Toujours dans ma robe, je me dirigeai vers la porte et fus s... Read full Story
Femboy 2021 2023-01-20 1,787 Stockings Crossdresser Amateur Fetish Blowjob Big Cock Lingerie domination Sex Toys cum in mouth
50%
HypnoSissy: Partie 1
DEVENIR COCKSUCKER Alors que je prenais le sixième chargement dans la gorge, quatre autres étaient déjà déposés dans mon cul et il me restait encore une file d’au moins six à attendre leur tour pour déposer leur chargement dans l’un de mes deux dépôts de sperme, je ne pouvais pas m'empêcher de ... Read full Story
Femboy 2021 2023-01-24 1,380 Crossdresser Fetish domination
50%
Tourmenter ⚧️ ⚧️
Sasha attendait avec impatience ces vacances en famille depuis peu de temps. L'invitation était courte mais faisable et même si elle se sentait un peu pressée à son goût, tout se passait bien. Elle adorait sa caravane. 'Glamping'... camping glamour... convenait à son idée du confort e... Read full Story
Femboy 2021 2023-03-23 1,715 Stockings Shemale and Girl domination Sex Toys feminisation chastity cage femination forcé
50%
EROTIC FANTASY PART 1.
The Secret Manor of Lusting Intersexual Ts.Ladys as they enforce males into there training house all too become wimpering shemale sexslaves! I met a Lady once at Bar too which she was very sexy Lady as we had some fun now n then as too get too know each other I slowly tranformed myself into her E... Read full Story
Isabella Coupe 2024-09-25 1,904 Amateur Fetish Uniform domination
100%
Angel & Victoria
Angel was a beautiful young girl living with two of her best friends, Monica and Amanda. All were transsexual, and the three shared everything together, from clothes, their sexy intimates, lovers, and each other's bodies. Angel was the youngest, at 23, a Japanese anime lover and the most... Read full Story
shemale lover 2011-09-23 6,598 anal Creampie Big Cock oral
80%
Honolulu surprise
Back in Honolulu, I used to fuck plenty of women as I was young, tan, blond, and in super shape with Triathlons. Mostly I would try to close the deal really quickly after I met someone, just going with “Hey you wanna go fuck?” question after a few minutes of chit chat. You would really b... Read full Story
shemale lover 2012-02-16 4,422 anal Creampie fuck
100%
Beefy Buns
It's hard to get good help. Probably, that's true in any business, but it's especially difficult to find decent employees in the fast food racket. Believe me; I've tried. I manage the local Beefy Buns franchise--burgers, fries, and shakes is our mainstay, but the menu also features fish and chick... Read full Story
shemale lover 2012-04-22 6,587 anal sex Creampie blonde shemale
100%
Danielle Works a Saturday
It had been a few months since his wife left him. Well "ex-wife" as the divorce had been recently finalized. It was her choice; she walked out on *him*. She said she got tired of "Danielle", even though she was entirely responsible for Danielle's "birth" to begin with. ... Read full Story
shemale lover 2012-06-18 6,084 anal sex Creampie oral sex cum swallowing
100%
Alexis Chapter 2
When I open the front door to my house, I'm already hard. I'm going to be home alone for an entire night, and I have a lot of things planned. I toss my backpack and jacket onto the couch, and by the time I reach my room I already have my shirt off. I let my pants drop to the floor and pull off th... Read full Story
shemale lover 2012-10-06 5,071 Creampie transformation dildo Sex Toys crossdressing
100%
I FIND MY ROAD IN SYGKROY
My name is Anastasia, although the real name is Nick. As you can see I'm a decent boy day, a normal relationship with girl (not so normal, but that another story!), Sociableness and not effeminate at work and generally to the outside world. But when you go home and my girl is missing, I beco... Read full Story
ANASTASIS CD CRETA 2014-12-03 4,302 first time Creampie Blowjob ass fucking 69 cd
100%
Claudia Coming out adventure part 1
*Author's Note: This story starts off being told in First person and after awhile the story shifts to third person* Hello everyone, my name is Claudia I am a Cross dresser who one day hopes to be transgendered, although I do not want the surgery, I am looking to eventually live my life full... Read full Story
MissClaudia 2015-01-04 6,348 tranny Stockings suck Creampie ass fucking doggy style Latex
87%
Southern Hospitality Ch. 03
XtinaSmith2017 Ash looked himself over in his bedroom mirror critically, finding himself oddly self-conscious about his looks. He had been texting Laura all throughout the day and they had agreed that dressing pretty casual would draw the least suspicion, so he had. He wore a simple patterned ... Read full Story
Gwapo67 2022-05-16 5,245 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature cum in mouth
100%
Blind Date
XtinaSmith2017 Anthony awoke to a piercing buzzing tune, a nice enough melody, but one he had come to despise shortly after he had made the mistake of making it his alarm. The culprit, his smart phone, was plugged in on the nightstand beside him and was in the process of making him gleefully aw... Read full Story
Gwapo67 2022-07-01 6,130 Bareback Creampie Shemale Fucks Guy Blowjob
100%
LE PARI (MAMAN/FILLE FUTA)
Ma mère, Kendra, se promenait souvent dans la maison sans haut, laissant ses énormes seins couler librement. Ça m'a dégoûté. J'étais sa fille, pas un gars au hasard qu'elle a ramené à la maison un vendredi soir (pas qu'elle a ramené des gars à la maison). Elle ne devrait pas montrer ... Read full Story
Femboy 2021 2023-02-11 1,542 Teen (18+) Big Cock Shemale and Girl domination Futanari cum in mouth shemale + shemale
50%
Hard Decisions by Elaine © 2020
Hard Decisions by Elaine © 2020 No one in this story is based on anyone alive or dead. It is a work of fiction and should not be read by minors. I appreciate the kind efforts of many of my friends who cast a welcoming glance over the initial writings. I owe you all a big debt of thanks. Prolog... Read full Story
Elainetguk 2023-09-06 5,325 Stockings Big Tits Creampie Lingerie Guy Fucks Shemale Mature
100%
DÉBUTS INNOCENTS
"Avez-vous pris votre vitamine, ma chère ?" Ellen a appelé de la salle de bain. Je me frottai le sommeil des yeux et ramassai le flacon de pilule, roulant un gros comprimé dans ma paume. "Ma pilule de cheval ? Je le fais maintenant." "Avez-vous déjà remarqué une différence ?" "Non. Les vitamines ... Read full Story
Femboy 2021 2023-01-26 1,535 Stockings Teen (18+) Crossdresser Cumshot Fetish Blowjob Big Cock Lingerie Shemale and Girl domination Guy Fucks Shemale
50%
MON NEVEU GOUJON ⚧️ ⚧️
"Daadddd, est-ce qu'on doit vraiment faire ça ?" ma fille pleurnichait. "Je suis aussi mécontent que toi, Tracy, mais je ne pouvais pas dire non. Tu es stagiaire dans leur magazine l'été prochain, tu te souviens ? Un bon tour en mérite un autre." Elle m'a juste fait la moue. Tracy est une étud... Read full Story
Femboy 2021 2023-04-16 1,640 Teen (18+) Blowjob Big Cock domination sissy sissification cum in mouth sexe anal féminisation Sissy
100%
Becoming A She-Males Bitch Part 2
After last nights ordeal I was given something to drink and taken to a bedroom upstairs. What I drank must have had some kind of drug in it because I was knocked out. I bet I was asleep in just a couple of minutes. I barely even remember lying down. When I woke up I was naked, sore as hell and fe... Read full Story
shemale lover 2012-01-04 9,326 cum oral domination
45%
Lost bet
It all began as a bit of a joke really. We'd all been out clubbing in some raunchy nightspots and were still high on the atmosphere. As the night wore on and morning was quickly rearing its bright and beautiful head, the group began to dwindle until only three of us were left. My husband Phil, my be... Read full Story
shemale lover 2012-04-04 24,705 Stockings Fetish domination crossdressing
100%
A New Life Part 3
I have now lived with Mistress Sara and Master Tom for over two years. They are great Masters to serve. We have interacted with other "families" and I have found them less then satisfactory compared to my own. Mistress Sara is a lovely woman, beyond words lovely. She is extremely strict an... Read full Story
shemale lover 2012-04-13 4,113 cum domination fisting rimjob