DUH its poop coming from a bum bum booty and having diarhhea, but when u say face, it means the person u said it to looks like poopy bum bum booty having diarheea
in example for poopy bum bum booty diarheea face
me: HEY POOPY BUM BUM DIARHEEA FACE
friend: *LAUGHS* funny lol.