A description of several-day-old semen residue found typically in a male’s unwashed boxers; sometimes found on toilet rims, walls, the ceiling; always found on farm animals
“As you can see, this involuntary celibate atheist weeabu hasn’t left his basement unit in 42 years, made evident by a 10x7 inch mound of moderately radioactive, dandruffy fuck mustard. God may be all-loving and powerful, but he for sure fucked up when he made this guy.”
by Dumpster Choir February 10, 2021

The aftermath of hot snakes from a week full of taco bell and indian food often resulting in bleeding rectum and or severe uunimaginable loss of all hope for a normal life
by notsoslimpeople March 29, 2015

Ejaculating a weeks worth of semen onto a females stomach upon climax.
( A weeks worth of ejaculate has the same color and texture of a light deli mustard.)
( A weeks worth of ejaculate has the same color and texture of a light deli mustard.)
by Tummy mustard September 14, 2018

When you clap someone so hard that their cheeks begin to resemble the squishiness of a mustard packet.
by MrStealYoAss March 16, 2020

by Dickslapper McCrapmouth December 1, 2011

When you and a friend (or complete stranger depending on your level of depravity) hold hands below a public bathroom stall divider while urinating simultaneously.
by The Mustard Mitten October 18, 2019

by Master Bytr October 10, 2004
