Big bang anal with my nerd brother's buddy

My brother really is the dumbest nerd around. His buddies keep sending him to the gas station and then suddenly there's a knock on my room door. Usually the boys just want a photo or maybe a little blowjob, but this time the guy really won't settle for anything and takes my little asshole coldly, even though I actually wanted to learn. Of course we have to be quiet so my parents don't notice and tell my brother that I'm fucking his friends again. We've had this topic often enough...