Top Definition
Someone who jerks off in the bathroom and gets cum on the toilet seat.
BOB: I never invite Frank over to my house any more.

JOHN: Why?

BOB: Cuz he's a donut froster.
by Peter Phil McCracken March 02, 2009
a person who goes out of his way to put a toilet seat down so he can piss on it - so the the next human being can slip and slide.
Johnny entered the stall with a giggle, unzipped his pants, kicked the seat, and shot his hot yellow sauce all around the horse shoe.
by John Newland August 15, 2003

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