When two homosexuals are having anal sex and one guy cums on the other’s dick, the man with the cum on his dick then proceeds to put his dick inside the man that cumed on it.
When a man is having anal sex with another person and the receiver shits so forcefully that the poop goes into the mans pee hole. He then pulls out and has to push it out like he's peeing, making a long brown turd that looks like a worm.