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
Get the Fuck Mustardmug. by KingMustard February 23, 2014
Get the Fuck Mustardmug. The act of putting honey mustard all over your girls vagina, then putting your penis into it. She then proceeds to lick your dick when finished.
by Taintsmellslikepaint June 18, 2021
Get the honey mustard fuckmug. Phrase exclaimed upon the massacre of the English language; the inability to pronounce a phrase with any level of coherence.
by Dr. Grammarly June 23, 2022
Get the Fucking Mustardmug.