My sister is in college and gone most of the time. She has left a bin full of her panties, consisting of mostly thongs. When I have the whole house to myself I like to get on here and read a couple of stories to get hard and get turned on. After I get really horny I move to my sisters room. I strip down to nothing and open the container and pull out one of the smallest pairs and pull them on so my whole penis is covered and the back of the G-string is pulled tight against my asshole. This gets me so hot and my dick is usually throbbing.
I the open up her drawer and pull out a pair of her short shorts and roll them up so they are tight. By this time I'm so horny, I can barely hold it in. So I put my phone on the video recorder and point it towards her bed. Then I get one of her rope tie things for her hair and tie it around my feet and around one of her bed posts. While my phone is recording, I take it slow at first just playing with myself, then I take it faster pulling down the shorts and pulling my dick out of the side of the thong. I then use my saliva to lube up my dick and my hands go to town. Doing more thrusting with my hips I get faster and faster until I can't hold it anymore, I pull the front of the thong over my penis and it makes me cum so hard my sperm shoots through the front of the thong and on to my chest. I then turn the camera and use the video for getting off later.
I am so hard just writing this and I have precum all over my boxers.