Definitions by Dan Lyons

Butt Mustard

The mix off blood, cum and shit that is often created during anal sex. It's dirty brownish yellow color and thick, soupy consistency resembles Dijon mustard.

How am I ever going to get that Butt Mustard off of my sheets before my girlfriend gets home?!?!?!

Butt Mustard by Dan Lyons December 28, 2008