mumface

Someone/thing who perpetrates/is (an act of) extreme annoyance.
Matthew Osman - Case in point.

Me: Hey, you spilled egg whites on the floor!

Osman: Yeah, and what are you going to do about it?

Me: you mumface! incidentally, i dislike you heartily. relocate yourself to a new locus.

by Jizzle on My Shanizzles January 23, 2007