My 19 yr old sister is driving crazy. She's all the time doing stuff to get me aroused and it's embarrassing especially around our friends because they think something might be going on between us. She's all the time flashing me and my friends but she only pushes my head into them screaming motor boat me mutherfucker motor boat me. My parents think it's akward yet humorous at the same time, I used to feel that way but it's gone on too long to funny anymore. I was mocked at school as it got out and I tried disclaiming having sex with my sister but people had their minds made up already. Some girls shunned me and some girls asked me out just because of the rumors. This is my senior year and will probably be voting Most Likely to Get His Sister Pregnant. Her friends have even started their teazes of flashing even with my dad right there watching tv,no wonder he's enjoying for me,perverted bastard. She has really honed in on me to the point of listening at my door for noises of masturbation and has picked the lock to catch me in the act,then blurting throughout the whole house oh Stan you want me to help you with that monster of yours,which makes having a decent sized cock a burden. Size does matter and it's one reason mysister has been soo persistent because she knows it embarrasses me when she gets me sexually aroused playing b-ball or any other sport because it bulges out and loves to point it out to the school,friends,old ladies then they just stare. I can barely be around her without getting an erection just because I know she's somewhere lurking to strike and I never tell her when I'm going swimming or the beach. My mom who has seen me naked a lot scares me because she won't step in and help with her and my mom just giggles before bursting into a big belly laugh because everytime we have this discussion she's reminded of our Christmas cards we sent out last year in which I had a bulge and in a hurry to get it over with we took the shot,then I raced off. So now my entire family has jokes about me hiding presents in my sweats. I'm moving to a new city after I graduate this year.