Raising an Adult Baby - Cover

Raising an Adult Baby

by Flier1948

Copyright© 2026 by Flier1948

Erotica Sex Story: A chance encounter on the internet led to me raising a teenage girl/baby.

Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa   Teenagers   Consensual   BiSexual   Heterosexual   Fiction   Spanking   Interracial   Black Female   White Male   White Female   First   Lactation   Pregnancy   Small Breasts   Infantilization   .

I always enjoy trolling through kinky websites and chat rooms on the internet, so it wasn’t unusual that I happened across a chat room about adult babies, got a login, and went into it.

Mostly, it was men looking for dom females, which I wasn’t interested in. But, there was one. A 19 year old woman looking for a place to live as a baby for an extended period. She wasn’t getting much response since most of the people in the chat room were married and just fulfilling their fantasies. I, on the other hand, was single, well off, and wasn’t dating at the time. So, I started chatting with her.

Her name was Marie and she had graduated from high school that year. She still lived at home, but her parents were pressuring her to move out and she had nowhere to go. She worked a dead-end job at the local mall, which was about 100 miles from where I owned a small spread I had inherited from my parents. Where I lived wasn’t ‘in town’, but it wasn’t ‘out-of-town’ either. The nearest substantial city was 20 miles down the road.

Marie and I chatted for over two weeks. I tried to get her to tell me how she related to an adult baby website, but she said she was embarrassed to talk about it. All I could get from her is that her parents were upset with her and wanted her out of the house.

Finally, I told her we needed to meet in person. She was really hesitant about that, until I said, “well, if you want help, we’re going to need to meet sometime.” She finally agreed to meet me at a restaurant near her home the following Friday.

I don’t know exactly what my expectations were, but I wasn’t dating anyone and it was a good way to spend an evening. She told me how she would be dressed and I did the same. The meet was on.

I arrived about 10 minutes early and, looking around, didn’t see anyone dressed as I expected, so I got a table and waited.

When Marie arrived, there was no doubt it was her. She was a stunning blonde, thin with long hair, smallish looking boobs but, what appeared to be, an oversized ass. She was wearing jeans and a tank top and walked a little bow-legged; I couldn’t figure out why.

She came over to my table, I stood, and we hugged briefly before she sat down. Oddly, I caught an odor of pee when we hugged, but dismissed it.

We ate and talked for a long time before she finally opened up. Throughout her growing up, she had never been able to stop peeing the bed at night. As she got older, it got worse and she often peed her pants when she was out, which is why she wore Depends all the time (now I knew why her ass looked so big).

On top of that, she had never gotten over the sucking instincts she had as a baby and, if she didn’t concentrate on not doing it, would start sucking her thumb, even in public. At home, she had bought an adult pacifier and sucking it was the only way she could get to sleep at night. She had never had a boyfriend because she was too embarrassed to go out.

Her life at home was miserable. Her parents were ultra-conservative Christians, had decided that she was an incorrigible sinner and wanted her out of their life. They had given her 30 days to move out or they were going to throw her out. Today was day 27, Monday would be day 30.

I make evaluations and decisions pretty quickly, and did here also. I asked Marie how she had gotten to our meeting; she said she had taken a taxi. Her parents didn’t allow her to drive.

“OK, well, you’re going to come home with me. I’m willing to try to work things out for you, but we need to talk where we can talk more intimately and in private and this isn’t the place.”

“You mean now?”

“Yes, right now.”

She didn’t argue, so I paid the bill and we left. She was worried that she didn’t have any dry Depends with her and the one she was wearing was wet. So, we stopped by the local mega-market to get some. She walked over to where the Depends were and started to get some, but I stopped her. I steered her to the adult diapers and we bought the size right for her waist. She looked apprehensive, but I told her that was what she needed. We also got baby wipes, diaper rash creme, large baby bottles, juice, baby formula, and the biggest pacifier they had in stock.

On the way back to my home, she didn’t say much. I asked her if she felt like sucking her thumb to which she replied, “Yes, but I was trying not to.”

“Well, it’s OK to suck your thumb whenever you feel the need, so go ahead.”

And, she did.

When we got to the house, we sat in the living room and I said, “Marie. I’m offering you a chance to live the way you want to live and not have anyone judge you for it. Do you want it? Yes or No.”

She hesitated for a second, started crying, and said, “Do you mean it?”

I told her, “Yes, you’re going to be allowed to live as a child, a child with a parent who takes care of you and guides you.”

“Then, yes. I do want it. No, I need it.” And, she began sucking her thumb.

“Just to be clear. You’re going to get everything you need, but you’ll also get disciplined when you’re a bad girl. It goes both ways. Do you understand?”

“Yes”.

“Alright. Let’s get you ready for bed.” And, I took her hand and led her to the bedroom.

When we got to the bedroom, I told her, “You’re a little too heavy for me to carry around like I would a baby, but other than that, you’ll let me do everything. Do you understand?” I got undressed as I had slept naked my entire life.

She pulled her thumb out of her mouth long enough to say, “Yes”.

“Sit on the bed.”

And, with that, I pulled her shirt and bra off. I don’t even know why she wore a bra. Her boobs were very tiny, but had big nipples. It was OK though. She wouldn’t be wearing a bra any more.

I told her to lay back flat and I pulled her shoes and socks off. Then, I raised her legs into the ‘diaper position’ and pulled off her shorts and wet Depend.

She had a nice pussy, although pretty hairy, and showed some rash where the urine from her Depend had started burning her skin.

I told her to wait there, went to the bathroom, and filled the tub with warm water; just a little warmer than skin temperature.

I led her to the bathroom and, along the way, told her she would be losing her pussy hair. “Babies don’t have pubic hair, so yours will be removed, permanently.” She looked up at me apprehensively, but didn’t argue.

I put her in the tub and, as soon as her butt hit the water, she started to pee. I didn’t say anything which she seemed to appreciate. I washed her completely. When I washed her chest, she moaned as the washrag ran across her stiff nipples. I paid special attention to washing her pussy and then had her get on all fours so I could scrub her asshole and between her cheeks. She had a dark stain around her asshole from improper wiping, but I told her we would get something to bring that area back to its normal color.

After drying her off, I took her to the bedroom and had her lay back down on the bed. I grabbed her ankles with one hand and lifted her legs up high, pulling her butt off the bed slightly. With the other hand, I slid a diaper under her, just as if she was an infant. I lowered her legs back down, but spread them wide. Then, I spread anti-rash ointment over her pussy and belly where the urine had caused redness. When I ran my finger over her clit, she jumped and moaned.

I asked her if she ever rubbed herself down there. She said she did and loved it, but had to be careful when she was at home. Her Dad had caught her once and took his belt to her bare ass until she couldn’t sit right for several days. I just shook my head. “Well, you rub yourself all you want. It’s healthy for you to feel good physically. You told me you’re a virgin and, someday, we’ll take care of that too, but not right now. Until then, you just keep rubbing yourself whenever you want. It’s OK.”

She smiled and said, “It’s so nice to be with someone who understands me.”

“You lay here. I’m going to get you some juice to drink before you go to bed.”

“But, I’m not thirsty.”

I gave her a stern look. “Would you like a spanking instead?”

“No, I’d like some juice.”

I went downstairs, got the half gallon of juice out of the refrigerator, and opened the bottle. Then, I crushed up some water pills (diuretics) into a powder and dumped them in. I also added a good dose of liquid laxative, but not enough to where she would be able to taste it. I wanted to be sure she would have to use her diaper. I didn’t want her to give herself stomach cramps because she was embarrassed to go. If she was to live as an infant, she needed to live as an infant.

I filled a baby bottle with juice and took it upstairs. I sat next to her and pulled her across my lap, face up. I cradled her head and put the bottle’s nipple in her mouth. She immediately began sucking the juice down and, soon, it was gone.

I slid into bed next to her, turned her on her side facing me, put the pacifier in her mouth, pulled the covers over us, and turned off the light. She put her leg over mine, snuggled up against me, and was soon asleep. I noticed that, even in her sleep, she was sucking hard on the pacifier. I decided to buy her an adult sized one the next day.

It was about four hours later when she nudged me with kind of a panicked look on her face. A whiff told me why. She had a dirty diaper. I set about changing her, being sure to clean all the poop from her butt and pussy area. She seemed surprised that I didn’t criticize her. I just kissed her on the head and we laid back down.

This time, however, I felt her reaching into her diaper and rubbing her little nub which caused her to breathe hard and her hips to buck. She finished herself off and went to sleep.

The next morning, I woke up to before Marie to find her holding my cock in her sleep. She wasn’t doing anything with it, she was just holding it and the warmth of her hand felt really good.

I bought her a loose sun dress that day so we could go out without it being so obvious that she had a diaper on. She didn’t wear a bra mainly because she didn’t need one. She might have been big enough for an AAA bra, but I doubted it; her boobs just hadn’t filled in yet. She did have fantastic nipples though - the diameter of your little finger and a solid 1/2” long.

It was going to be a busy day. After putting a fresh diaper on Marie and getting her into her dress, I made her two bottles of warm formula and a bottle of juice. She eagerly drank all three and was still hungry, so I made her two more bottles of formula. I also had her bend over so I could apply anal bleaching creme to the dark parts around her asshole. That made her burn and itch some, but it was going to be good for her in the long run.

We got in the car and headed off to her parent’s house. I figured we might as well get the worst part of the day over first.

We walked up to the house and Marie wanted to just go in, but I told her we needed to knock. Her mother came to the door and got a scowl on her face when she saw us. I knew Marie was uncomfortable because she immediately started sucking her thumb.

I told Mom that we didn’t want any drama; that we were just there to pick up Marie’s belongings. She said, “Who the hell are you?”

 
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