Perfect. That's how I describe my sister. Her body, her tits, her legs and, of course, her ass every part of her was perfect. I've been lusting after that ass of hers for years. Ever since I was 16, when I saw her just after taking a shower I wanted to fuck her. The water glistened off her butt, not even a second later she turned around, showing me her perfect tits, her navel, the "V" where her abdomen meets her legs. Unfortunately that's all that happened. As soon as she heard me the covered up and kicked me out. Ever since that day I've wanted more and I finally got it one day.
It was the day of her 18th birthday; she went out with some friends and came back at nearly 1:00A.M. As tired as she was I'm surprised she made it to her room. Her shoes and sock lay in the hall and her door closed. She caused a few loud crashed on her way which woke me. I lazily got up to check it out. I made my way to the hallway, seeing her stuff, I figured she was home, but I decided to check.
What I say will forever stay burned into my memory. My sister had managed to get her shirt off and only her shirt, but she was wearing a short skirt which was hiked up enough to show all of her sweet ass. She had on the sexiest thong on, showing her ass cheeks. I was mesmerized by her tanned ass. After five or so minutes my eyes wandered up to her back, her bra was unclasped. Knowing I would never have this opportunity again I made a decision I would never have done otherwise. I wanted to feel her tight pussy around my cock and I decided to risk it.