I was so horny I couldn't sleep. I had to masturbate in the bathroom or else I would have woken up my step-sibling. After that I went back to bed and tried to get some rest. I woke up a few hours later and my step-sibling was still not home from his date. I thought about going to take a shower, but then I changed my mind and decided to just jerk off in the bathroom again. I was so horny that I couldn't wait any longer. My step-sibling came back home while I was jacking off on the toilet and caught me red handed! He didn't say anything at first, but when he saw how hard my cock was, he started getting aroused himself.
