Caught my brother sitting down in the stand-up shower floor with his legs spread eagle. He covered up his dick as soon as I opened the shower curtain. I said, "What are you doin?" He replied very sheepishly, "Nothin." He was 15. Me and my friend teased him unmercifully about it until he cried. Those were the days when people didn't admit they masturbated. He got me back though. He walked in my room and I was goin' at it. I quickly threw the covers over me, hoping he didn't see what I was doing. I waited awhile to think of what I was going to say. I walked into the living room and said, very macho like, "You probably thought I was jacking off, well I wasn't." If that wasn't a dead giveaway...