Butt Mustard

The greasy residue left in your underwear.

by Stuart Cox May 31, 2003

Butt Mustard

The tangy yellow spread secreted from the anus during copulation - often used as a spread on chicken sandwiches.

Man, gimme some more of that butt mustard yo, my sandwich is dry.

by John November 12, 2003

Butt Mustard

The pasty by product of a long days work, and a bad wipe job after a long night of drinking beer and eating too many hotdogs.

Hey, look at the back of your pants, looks like you have a bit of Butt Mustard there.

by The Tatooed Nail Bender February 13, 2004

Butt Mustard

A fart that seeps out a little bit of liquid. Similar to a shart, but much less solid. Usually occurs after a heavy night of drinking.

When I farted, I thought it was okay, but then I felt the butt mustard squishing between my cheeks.

by stanleyroper July 15, 2005

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?!?!?!

by Dan Lyons December 28, 2008

Butt Mustard

Another way to describe the shit that comes out of a baby, it gets it's name from the color and consistency

You have to change little Johnny this time, I had to deal with his butt mustard last time!

by Metallicajunkie October 4, 2018

Butt Mustard

The watery sound ketchup/mustard makes when squeezed from a bottle.

Wow, Mike, that really sounded like a fart. No, dude, it was butt mustard. I was putting ketchup on my burger.

by Annie Farkle September 9, 2009