(verb) The act of insulting (or roasting) someone so badly, it leaves a (figurative) rash on them.

Origins: The Edward Devotion School, Brookline, around 2011
Person 1: Damn I didn't know the Haitian earthquake was so bad it got around to your hairline too. That shit's fucked up.

Person 2: Shut up white trash, I'ma stop on your nutz if you keep talking.

Background characters: OH SHIT THEY'RE RASHING THE FUCK OUTTA EACH OTHER!!!!
by sennot's(FAS)children March 30, 2023
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t- series is t-rash
t-rash is hella gay rofl omg xd Kappa
by 1feetpinus April 9, 2019
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This means to stick your dick and balls into a gay dudes asshole and take it out with poop on it
by Road rasher August 14, 2023
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The rash you get when your leotard is too loose, so that your tights slip down and chafe the inside of your thighs. Kind of the opposite of a wedgie.
"This tight-rash really itches, cover for me for a second."
by Seeourkay May 20, 2009
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the moment you realize you can’t feel your ass after Sichuan mala hotpot
oh Ongdang you should not eat so much Sichuan hotpot, you will definitely get rash shao tomorrow!
by zacharichn September 19, 2019
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What one would find on their genitals the morning after a night at the club
Jim woke up to find himself with a bad case of ally rash
by -x-x-x- May 5, 2015
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