My sister Lux Lives is real good at the sex. I taught her almost everything she knows, and I like to get real hands on with my instruction. Because of this (and her stunning good looks) she has plenty of cool hotties lining up around the block to tap her sweet holes. So when the school's biggest loser asked her out to prom, she thought it was so funny that she couldn't help playing a prank on them. She told Casey that she would go with them, and instructed them to pick her up at our place. When Casey showed up, we started teasing them about being a virgin. Barely able to contain myself I taunted, "you actually thought my sister was going to fuck you tonight? You???" Not only did they not go to prom together, not only did Casey not get laid, I made Casey watch me fuck Lux while we laughed in their face! I spread her tight pussy open so they could get a good look, making Casey think that they might even get to touch it, then I pushed them away as Lux and I giggled uncontrollably. The only time we ever let Casey touch her beautiful body, was when I made them spread her open nice and wide so I could slide my hard throbbing girlcock deep inside her pretty pink cunt. It was a lot of fun showing the loser how much fun they were missing. I did end up giving them one consolation prize though. I told Casey to grab a camera and my big hot load all over Lux's cute little tits. Since they wouldn't be losing their virginity for at least another 10 years, I figured they could at least jerk off to that XD