They were just goofing around, but seeing his buddies ass at eye level was causing him to chub up.  He would keep the image of that tight, hairy ass in his mind for the rest of the day.  At some point tonight he would be unable to sleep and would seek out the reason, his friend’s tight ass.

Not surprisingly, once he raped his sleeping friend and pounded a load of jizz into his hole, he slept like a baby.