Thank you writer for this story. Indeed a woman’s shapely bums are beautiful. The photo is for illustration purposes and is provided by Fuckingtoy. I am sure you will understand why she uses this name.


Hi dear reader. I’m Jack, and 28 years old. These experiences took place when I was 18 years old and still a virgin. I was a little shy, and I had never done anything sexual with a girl before, but I masturbated daily to keep my desires and fantasies contained. One summer day I got my hands on some porno booklets, which I had found in an empty house in our neighborhood. One of those magazines was called “Buns” and I had seen a lot of pictures of with naked bottoms, but never in real life. I can’t explain why, but bums and worn panties became my favorite.

One night, I was watching and enjoying kneading my penis when my 20-year-old stepsister Emily came barging into my room without knocking. I just had her panties in my hands and one of those little books. You can imagine my embarrassment and my anger at the invasion of my privacy. Emily was 20 years old and placed with my parents due to the death of her father and an alcoholic mother who was unable to care for her. She started giggling and later became angry when she realized what I was doing. Not only that, she snatched the booklet and her panties from my hands with which I was trying to cover my erection, but she also teased me about my choice of porn. Of course, she wanted to know how I had gotten into it, and why I found asses irresistible. I stammered out a vague answer and tried to curse and scold her out of my room. I have to say that physically, Emily wasn’t exactly a topper.

She wore glasses and she was a little chubby, and she was a demanding personality at times. But she had a nicely shaped hourglass figure, and she had a nicely shaped butt. Up to that point, that hadn’t occurred to me until the following happened. My evening was ruined as far as that was concerned as far as any self-pleasure was concerned and I was in a pretty toxic mood. I remained angry with my sister for the next few days, not speaking to her again. But, one evening she came walking by my room after she had showered, and then she knocked on my room door, I opened it, and she called out, “Hey Jack, Look at this” and she pulled up the bottom of her bathrobe and bared her ass at me. In addition, she waved her panties and asked do you want to smell?

She smiled and continued walking to her room even before I could answer. I remember being shocked by her brazen act, but I also felt lust rising in me. Wow, my sister has a nice well-filled ass, just like the girls in that porn magazine! I began to feel the excitement in my penis and also confusion. I didn’t think about anything else that night except the picture of my stepsister and her beautiful buttocks. The next time she took a shower, I deliberately left the door to my room open.

Of course, she stopped at my door and called my name, turned around and again pulled up the bottom of her bathrobe. This time she shook her butt back and forth and said, “Here, this is for your butt fetish!” I don’t know if my sister was hoping I would respond in some way, but as much as I would have liked to look at her buttocks longer and more, I was too timid and didn’t answer. She intimidated me a bit and I didn’t want to stir up her sassy side. Well, I didn’t have to wait long for the next maneuver and I didn’t have to take the initiative either.

Emily came out of the shower in her robe and instead of lifting the back, she walked through the open door into my room, closed the door, sat down on my bed and asked me if I had enjoyed watching her show. I blushed shyly and said yes. Then she asked if I wanted to hold her buttocks in my hand. I remember looking at her intently and not sure if she was kidding me or not. Rather than wait for her answer, she bent down and pulled her robe out from under her, and bared her round ass. “Feel it” she said. So I did. I felt her warm skin, just coming out of the shower. I went over her buttocks with my trembling hands and kneaded them enjoyingly. Not only that, she gave me her panties to sniff.

Meanwhile, I felt an instant erection rise in my pants. Emily knew it and upset me by asking “Would you like to jerk yourself off while holding them?” I didn’t answer right away but unbuttoned my pants and pulled out my penis; and began to work my penis while running my hands along her buttocks. She warned me not to squirt my cum on her butt because she had just finished showering. I quickly grabbed a handful of tissues and it was just in time.

I was so overwhelmed and overstimulated, I ejaculated immediately, and Emily watched tensely. Then, after an endless time of milking, it was over. She put her robe back on, stood up and gave me a big wink, and said, “Now you have a real butt fetish” and she walked out of my room. I was utterly dazed after that, not only had I caressed and held a girl’s buttocks, but I had masturbated in front of her and watched, but it was my stepsister! I remember getting pretty confused, my sexual feelings colliding with my guilt for not doing something like that. But the feeling of lust soon overwhelmed the guilt I was feeling.

A week later, my sister and I were watching TV. My parents had to get up early the next day so they had gone to bed on time. When the commercial started Emily asked me if I had any more naughty thoughts about her ass since the incident in my room. Again I had to blush deeply and mumbled that it was indeed the case. Then she asked if I wanted to hold them in my hands one more time, and immediately my heart started pounding and I felt an erection rise again. Then she told me to wait five minutes and then come up to her room. When I got upstairs, Emily was sitting on her bed in her nightshirt.

I closed the door, and she told me to take off my pants. Then she reached for my now stiff penis and stroked for a moment, and I remember shaking with excitement as I felt her hand on me. I would soon cum if she kept going at this, but apparently she felt this too and turned around so her backside was in my view. She pulled up her nightshirt, and once again her lovely buttocks were in my view. I didn’t know if I would ever get that chance again, so I was definitely in no hurry. I gently stroked her satiny soft skin on her one buttock, moving my hand up and down, again and again.I heard Emily sigh softly, and I knelt down and kissed her buttocks and pressed my nose into her butt crack, inhaling the aroma of her pussy and the musky scent of her ass.

My penis twitched and throbbed with pleasure that it almost hurt. But, I didn’t want to go too fast, I wanted this to last awhile. So, I continued to kiss, caress and sniff, and I heard Emily sigh, and saw that her fingers had gone to her pussy and she was fingering herself. Arriving at this point, I couldn’t wait any longer and began to work my penis, growling and breathing heavily. I soon felt my balls tighten and I was ready to cum great.

On a whim, I leaned over and pressed my penis into Emily’s deep gap between her bottom and I ejaculated and pumped my sperm into her butt crack, and at the same time Emily began to shake and had her own orgasm, her buttocks delightfully squeezing together in her spasms and contractions. It was an amazing sight and an amazing sensation, and it was overall too soon. Emily grabbed a box of tissues, wiped my cum from her ass cheeks and silently pulled her nightshirt back down. I got dressed again and went to my own room. Later she said she felt guilty for letting it go this far. It was an experience for me that I will never forget and it was the first of many subsequent girl-butt experiences.