a guy
Guy on guy is when two guys get so turned on they do a full-on makeout session, then spend the next hour wanking each other until they all come. Some of them even go as far as to 69 and rim each other’s butts.
I walked in on them 69ing in the middle of my living room.
They were wanking each other like they were in a porn movie.
I swear they had butt sex in my mom’s car.