The facial expression achieved when you're taking a gigantic size bite out of a hamburger/hotdog and you expect ketchup but itstead it's fucking loaded with mustard.
"You should have seen that kid's mustard face after I falcon punched him in the testicles. Priceless."
"That old woman had a perfect mustard face after I crop dusted that elevator."
"That old woman had a perfect mustard face after I crop dusted that elevator."
by Red Fingaz May 5, 2009

She: What's the matter, Mr. Softee? Can't cut the mustard?
He: Don't worry, I'll just lick the lid instead.
She: Oooh, you lover boy, you!
He: Don't worry, I'll just lick the lid instead.
She: Oooh, you lover boy, you!
by Hugh Chardon Junior July 8, 2010

a man with mustard on his nuts
when a man sticks his scrotum inside of a womans vagina and has her urinate on his balls while he ejaculates
when a man sticks his scrotum inside of a womans vagina and has her urinate on his balls while he ejaculates
by mike December 23, 2004

Urinating into your partners anas during anal intercourse. Then continuing to thrust until the a yellow vicus substance excites feom the body.
by Branagain November 6, 2018

Is the substance that exits a girls anus when she flatulates after someone urinated inside of her colon.
Heather just shot dusty mustard in Brandon’s face after he pissed in her butt. Those two are strange.
by Pamplemousse789 November 16, 2017

"Hey man, you're not gonna believe what happened with my gf last night, we accidentally made pussy mustard!"
by ethanbaldwin36 February 20, 2019
