Butt Boy is what happens if someone takes a Chuck Tingle story and films it like a gritty cop drama. A man with a portal in his ass is abducting kids and sticking them up there. Hot on his trail is a jaded, hard-bitten cop, and they play a game of cat-and-mouse throughout the movie.
Butt Boy has, without a doubt, the stupidest premise for a film of the entire festival, yet it is played entirely straight. All the humour is from how ridiculous that is, rather than any standard jokes in the movie.
Silly and weird.