Top definition
This refers to your Fecal mass (Poo) the day after a Guinness bender which is black and quite scary and should be known as a guiness monster
"Dude I just unleashed a guinness monster all over the bowl"
by Dave1892 April 11, 2006
Mug icon

Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

Buy the plush