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When your co-worker named Nichole comes to work wearing a BIG purple sweatshirt and expects no one to comment on it.
Oh look, Nichole looks like Grimace in that sweatshirt!
by LD1637 October 13, 2011
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22
A grimace (as explained in a video by You tubers Weasel Horizon) is the act of penetrating a females anus with a dildo (preferably a purple one) with out any lubrication. The act will cause the woman to grimace.
Karin started to fuck Ami in the ass with that purple dildo during the orgy but forgot the lube.
Jordan: {while snorting molly} DAMN! She givin' that bitch a grimace! SIM GIRLS!
by J-Reck Tha God January 04, 2015
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23
Grimace A Nick Name for a thick Penis
Her: Why did you Name your Penis Grimace?
Me: Because It's a short Fat Purple Muther Fucker, like Grimace
by ricardoduck March 09, 2008
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25
the ex-mascot of mcdonalds who had a thing for stealing milkshakes untill ronald MCdonald became the new mascot and cut grimace's arms off for stealing.
me:"ever noticed how grimace used to have four arms?"

dave:"its common practice to cut thieves arms off where ronald comes from"
by hay im mud August 25, 2008
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26
Any ugly female found at a party. Not to be confused with a Hamburglar.
Guy 1: "Dude, all the hot girls left!"
Guy 2: "Don't say that in front of grimace!"
by SocratestheMoist December 11, 2011
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27
A fat chick that wears a purple sundress or any other "Grimaceesque" type clothing (anything purple, even shoes)
Jamie shouldn't of worn that purple dress, she looks like a God damn Grimace!
by P.O.P. II May 20, 2010
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