Mustard Ass

Someone whose ass emits an odor strong enough to create casualties reminiscent of WWI's Mustard Gas.

Mike 'Mustard Ass' Dukes, has a weapon of extraordinary proportions in his arsenal.

by Krazy Kraka February 24, 2004

ass mustard

The brownish-yellow discharge found in one's undergarment after an evening of junk food and/or bad beer. It can be delivered by flatulence, or a steady leak.

Boy howdy! your drawers are loaded with ass mustard!!!

by biggdogg September 4, 2003

Hot Yellow Ass Mustard

Hot Yellow Ass Mustard: the result of anally straining oneself beyond one's limits then exposing that matter to a heated element.

After we ate the bean burrito we had a farting contest in which Matt pushed too hard and sprayed ass mustard all over the space heater causing it to become hot yellow ass mustard.

by Frankendouche September 11, 2005