My Stepdaughter's Ass

Story of how I used to hump my 18yo stepdaughter's butt cheeks when she was sleeping

Back in the day, I was constantly horny. I remember the first time I noticed my 18yo stepdaughter, and her round, plump ass. I didn’t begin noticing it until I began watching assjob (hotdogging) porn. For those that don't know what that is, it is where you hump between the ass cheeks, you don't penetrate. It is a huge turn-on for me and a nasty habit I developed. I wasn’t attracted to younger women, just big butts in general, and my stepdaughter was thick with lots of curves. Her mom was a single mom when I met her, but has more boobs than ass, and I never thought I would be in this situation. A 38-year-old stepfather, in love with his stepdaughter's ass.

My stepdaughter would wear tights around the house, and I could see the entire outline of how her ass stuck out and jiggled. She did track at the local college, so it would make sense that she would have an in-shape butt. She would always stay awake until 4am, either on her phone or watching television. However, her one flaw, and to my delight, she was an extremely heavy sleeper. In the mornings, her mom would yell for her to come get breakfast, but she would never show up. Her mom would always ask me if I could go wake her up. We lived in a two-story house, so I would have to go all the way upstairs to get to her room. I would go into her room and shake her, vigorously, but she would never wake up. She just kept snoring away. So, I just gave up.

When my stepdaughter began going to the local community college and I would pick her up. However, one day, I think I smelled alcohol on her, and she was acting all giggly. I didn't want to alarm her mom or jump to any conclusions unless I had hard facts.

One particular morning, during the summer months, her mom asked me if I could go upstairs and wake her up for lunch. She literally was still asleep around noon. When I went in her room to go wake her up, I noticed that the covers slipped off her body and she was just wearing panties while lying on her stomach. I didn’t even know she slept in just panties. It never occurred to me to snoop on my stepdaughter. However, her ass looked unbelievably hot. It looked like two large watermelons. Her ass naturally spread apart, so the cotton fabric from her panties were stretched at her butt crack. I could see the dark silhouette to the entrance of her asshole. I was mesmerized but snapped back out of it. Imagine if her mom walked in and saw me staring at her sleeping daughter's ass.

I started shaking her to wake up, but no response. I was aggressively pushing her while saying, “come on, girl! Wake up! Your mom says breakfast is ready!” Still no response. Then for some reason, I just placed my hand on one of her butt cheeks..... It felt so soft. I began squeezing it and caressing it. Afterwards, I stuck my middle finger out and began sliding my finger up and down the crack of her ass through the fabric. Her mom yelled for me, so then I quickly threw the covers back over her and ran out of the room. I told her mom that she wasn’t waking up and that she'll just have to eat whenever she wakes up. That was my first time molesting my stepdaughter.

Throughout the day, all I could think about was my stepdaughter's ass in that underwear. When she finally did wake up and would walk around the house, I would just constantly stare at her ass. She was wearing booty shorts this day, and I would always try to find ways to get her to walk in my vicinity. I would do things like tell her to grab something for me. I would even go so far as to intentionally tilt a picture frame and ask her if she could come realign it while I stared from a distance to make sure it was leveled. While she was fixing the picture frame, I would just stare at her ass. At this point, I became obsessed with my stepdaughter's ass.

It became too much to bear, so I had to lock myself in my room and masturbate to incest porn about stepdads fucking their stepdaughters with plump butts. This went on for several weeks and my mind began failing me. I couldn't believe I was obsessed with my stepdaughter's ass. All I could think about was how I wanted to grab her butt cheeks again. I knew I was going to wait until she fell asleep before I tried again this time.

All throughout the night, while my wife was sleeping, I would sneak out of bed and quietly tiptoe upstairs. My stepdaughter left her door open, so I would casually walk by and ask her if everything was okay, and that I was just checking on her. After a few times of doing this, it felt like it was becoming awkward. Not to mention, it was around 3AM. Also, she was probably wondering why I kept walking by her room. So, I just decided to go back into the room with my wife. I set my alarm for 5AM and eventually passed out.

My alarm went off and I snuck out of bed like I was going to use the restroom. I made my way upstairs and was quietly walking down the hall. As I was getting closer to my stepdaughter's room, I could hear small snores echoing down the hallway. I peeked my head into her room and saw that she was snoring away. My heart began racing as I carefully went back downstairs to make sure my wife was still sleeping. After I confirmed she was still asleep, I closed the bedroom door quietly and made my way back upstairs to my stepdaughter's room.

I slowly walked over to her bed and began shaking her to see if she was responsive. As I thought, she didn't even flinch. I noticed she was lying on her side, so I rolled her over onto her stomach. After removing the covers, I noticed she was in her panties again. My cock sprung straight up. I began caressing her butt cheeks and just grabbing two handfuls. I would squeeze them together and lightly slap them. Her ass cheeks were turning red from my handprints, so I needed to be gentler. She was still snoring away. By this time, my cock was rock hard, and I lost self-control. I told myself that I could probably fuck her ass cheeks, and no one would know.

I began pulling her underwear down, inch-by-inch. I was being careful not to accidentally wake her. It was hard to get the panties over the top of her ass, but I finally pulled her underwear down where it was resting on the back of her thighs. Her ass looked magnificent. Just smooth, no marks or defects. Just two, fat, ass cheeks. I grabbed her ass cheeks, and it felt even better without the fabric in between us this time. I was in a state of euphoria. I even leaned forward, kissed between her ass cheeks, and started talking dirty to it, saying stuff like, “I’m about to slide up all inside of you and blow my hot cum all in you.”

I covered her body with the covers again, and I made my way to the bathroom located down the hall to grab some lotion. I snuck back into her room, closed the door behind me, and locked it. I took off my pants and boxers and climbed onto the bed beside her. I put the lotion next to our bodies, and I slowly removed the covers from her lower half, exposing her plump ass to me.

I covered the top part of her body with the blankets, and I mounted on top of her where I was resting on the back of her thighs. I spurted some lotion in my hand and started massaging my dick and rubbing lotion on her ass. I smeared lotion all over both of her ass cheeks where it looked like a birthday cake. I was lathering lotion all over and between her ass cheeks. Finally, I leaned forward, and my dick slipped right between her butt cheeks.

The feeling was intense; unlike anything I’ve ever felt before. My entire dick disappeared between her soft buns. I began slowly humping my stepdaughter's ass cheeks. I was rocking at a steady pace where the bed was making a creaking sound. Nearing the end, I was getting full strokes in where her ass was trying to greedily swallow my cock. My cock would slide from the bottom of her ass cheeks, all the way up where the head of my cock was poking her lower back. All the while, her ass cheeks had my dick sandwiched tightly. I only lasted about 40 seconds until I busted a huge load inside her ass crack and all over her ass cheeks. There was so much cum that it pooled up on her ass crack and was streaming down between her thighs.

I was still rock hard and shaking on top of her from the intense feeling. I lost all self-control, and I got more ballsy. I grabbed my cock and guided it up the entrance of her asshole. There was just so much mess and everything was slippery. I was able to get about a quarter of my shaft up her ass until she clenched and shifted her body. Just her ass clenching on the head of my dick almost made me bust a nut again. But she never woke up.

I slowly dismounted her, and quietly opened the door, hoping that her mom wouldn't be standing on the other side. Thank goodness she wasn't. I rushed to the bathroom to get toilet paper and came back to clean up the mess. It took about 6 wads to get all the cum out. The paper was drenched with cum. To this day, I have never came so hard in my life. I pulled her underwear back up, covered her body, and quietly snuck back downstairs. I was so fucking scared that my heart was pounding out of my chest. I went in the room to check on my wife and she was still sleeping. So, from the looks of it, I got away with it. I had to sit down in the living room to catch my breath and let my heart rate slow down. I was still scared that maybe my stepdaughter might find cum in her sheets, or her mom might find it, and I would be screwed. All these thoughts were racing through my mind. I finally just said, "what's done is done." and went back into my room and passed out.

That morning, I woke up to the smell of my wife cooking breakfast. My heart was still pounding, and I was scared to walk out there. I walked out to confront my wife, and everything seemed normal. I gave her a kiss, and we ate breakfast together. My wife told me she tried to go wake up my stepdaughter, but she's passed out up there. I was relieved that she didn't notice anything. She told me that she needed to go to work and if I could do some laundry and make dinner since I was off today. I happily agreed.

When my wife left, I watched her car leave the driveway and I rushed back up into my stepdaughter's room to look for evidence. She was in the same position I left her in a few hours ago. I told myself there was no way. As I was looking for any evidence of my cum in her room, I stumbled across an empty liquor bottle. It was the exact liquor bottle I kept in my liquor cabinet. I just always assumed my wife just drank it, but turns out, my stepdaughter was stealing our liquor. Then it hit me... She has been drunk this entire time!

I immediately started molesting her ass again. I just removed the covers from her body and began grabbing her ass cheeks. I went to the bathroom to grab the lotion and toilet paper again. When I got back, I shook her very hard, saying that breakfast is ready, but she kept snoring away. My dick was a full mast at this point. There was no one in the house but her and I. I was about to ravage her juicy ass.

I pulled her panties completely off this time, spread her legs apart as far as they could go, got up behind her, and just began humping away. I kept increasing my humping power and speed to see how much I could get away with, but she had no response. She just kept snoring away. I was basically slamming my dick against her ass cheeks, but she was still unresponsive. At one point, her ass was clapping around my dick. The bed frame was slamming against the wall, but it didn’t matter, she was still passed out. At that point, I knew I could pretty much have my way with her. I remember squeezing her ass cheeks together where it sandwiched my dick so tight, and I just humped her for about 8 long, deep strokes, and I busted a fat ass nut all over her back and over her ass.

I humped my stepdaughter's ass that day five more times within two-hours. At one point, I was able to prop her up in doggystyle position. I lifted her by her hips and put a couple pillows underneath her, then I spread her knees. It was a pretty sexy view, and I got a good look at her pussy. I just began going to town on her ass. However, everytime I tried to put it in her ass, she would clench her ass cheeks and almost wake up, so I just said screw it and just humped her ass cheeks. One time she almost woke up but fell back asleep again in a drunken stupor.

This went on for about a few months. I would purposely buy more liquor so my stepdaughter would drink more. I knew she would develop a tolerance, so I bought more liquor. Finally, one day I got caught. My wife was wondering why I was no longer having sex with her. She had turned back around after leaving for work, because she forgot something, and I didn't hear the door open. I was upstairs in my stepdaughter's room, and I had my stepdaughter propped up in doggystyle position again, gripping her thighs, and just humping away at her ass cheeks. Her mom walked by and saw the whole thing. She covered her mouth in shock and began screaming and crying and ran away. I don't think she knew her daughter was passed out drunk, I think she just assumed I was having an affair with her daughter. I rushed to get dressed, re-dressed my stepdaughter, covered her back up, and went down to find my wife. She had already left.

I tried calling her, but she never answered. Shit sucked. I figured I was going to prison since I was molesting a woman without consent. Then I just went in defensive, survival-mode. My wife didn't come home for 3-days, and she didn't talk to me or my stepdaughter. My stepdaughter kept asking where her mom was and I told my stepdaughter that she was mad at us because she caught us having sex. My stepdaughter looked shocked and said, "We've never had sex!" I then told her, "Well, you typically get drunk, yes, I know you have been drinking my alcohol, and you get very handsy. The other day, I went up to check on you, and you began rubbing on my thigh and you even started rubbing on my dick. And we always end up having sex, but you pass out right in the middle of it."

My stepdaughter was speechless. She felt so ashamed. She turned instantly red, and she believed every word. She even said, "Oh my gosh! That's why my boyfriend broke up with me because he said I slept with his best friend at a party, and I couldn't remember!"

Long story short, they moved out and we got a divorce months down the road. I avoided prison time, luckily. However, I miss that ass so much. It's been a year now, and I consider myself lucky to have had a plump butt stepdaughter with a sleeping disorder, and a curvaceous ass, that I could hump as I pleased. Maybe one day, I'll reach out to her. She didn't seem too bothered when I told her we were having sex 😉