Im new to this and this is my first story so please bare with me.Last Friday night my girlfriend and I had a game night with my sister and her boyfrie...d. It was a pretty long evening, but eventually we all got tired and headed to my room to watch movies. We all knew this wouldn't last, and soon my sister and her bf left my room to go sleep. The movie was still playing and I was still wide awake (as tired as I get, I never get sleepy) so I kept watching it. I am an 18 year old guy, and she is 18. The bedside clock read 9:45 a.m.Then I remembered the night before and my heart was filled with warm sunshine and bright happiness. I jumped out of bed and paused as my neck and shoulder muscles protested and my mouth and tongue were a little sore. "Hey, little boy take it easy, we aren't used to that kind of workouts as you put us through last night."I felt weird inside my shorts, too smooth, too sensitive. And at inconvenient times my cock hardened and bulged in my suit pants as I thought of. In wet weather I liked to wear a rain coat with nothing underneath. Tonight I planned to wear shorts with an elastic waist band which come off very easily and a tiny top which covered my boobs and not much else. She decided to wear shorts and a cropped T-shirt.John, Helen and I arrived at Sue and Jerry's place and were greeted at the front door by a naked Sue She pressed her body against each of us as she planted a kiss on our lips. We stripped off and tossed our clothes on top of a pile of. “Squeeze ‘em hard Mark, make them hurt a little.” When I do, she totally loses it. She grabs my prick and really starts to rub her clit with it and the more I squeeze, the closer she gets to cuming, I can feel it. When she puts her head on my shoulder I say “Cum for me Theresa, let yourself go and I’ll cum with you, I’m so close, you just say the word”.“Oh my, Mark, this is so sexy, let’s cum together if we can.”As she’s rubbing the head on her clit she starts breathing real hard as I squeeze.