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 9, 2008
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the purple blob of joy from mcdonalds......his greatness is owed to the ability to be undefined- noone knows exactly what he or she is
grimace is purple.
by jd December 9, 2003
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he is a large egglplant character created by mcdonalds to increase consumption of eggplants worldwide in an effort to promote the essential value of eggplant
grimace is a worldwide example of eggplant neglect
by dax5246 October 7, 2007
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Another word for a big plump (fat) chick.
Mark: Why didn't you hang with that chick last night?

Joe: Fuck that bitch, she was Grimace.
by Bizzleknowlege September 25, 2008
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A failed attempt to clone Adolf Hitler. Seen on McDonalds commercials.
Grimace is an aristocratic bastard.
by Bovis May 15, 2003
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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 5, 2015
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