I was upstairs in my room and heard my step-brother and his friends all hanging out. It sounded like they were all having a good time so I thought I would step downstairs and join the party. While downstairs my step-brother asked me to leave, he told me this was just a party for he and his boys. I could see that none of my step-brother's friends had a problem with my joining in on the fun. My step-brother never lets me have any fun...today that changed! I followed one of his friends to the bathroom and grabbed his cock and invited him upstairs to my room. He promised he wouldn't tell my step-brother so I jacked his cock until he came. Oh well, step-brother will never know!