When a guy is fucking a girl in the ass and he headbutts her in the back of the head, causing her to pass out. He then flips her over and takes a shit on her chest and titty fucks her. This is a combination of the Donkey Punch and Chilli Dog.
Neil: Dude, you sick fuck, did you really give that girl a Filthy Herring.
Jordan: Ya, and she still called me the next day!
Neil: What a slut!