Doing bad, dirty and nasty things to people.
Like going to a girl's house and have sex with her then steal her money from out of her purse. That nigga is grimmy.
by Dwight February 01, 2005
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adjective of being dirty; nasty; gross.
"thats grimmy.."
"that girl is so grimmy!"
by Cecelia December 30, 2003
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(noun -- "GRIM-ee" -- plural grimmies) Any character considered to be an enemy in any video game.

Origin: Rocky Mountain region of the US, late 1970's. A reference to any of the space aliens found in Taito's Space Invaders.
Dude, did you see that hunter grimmie frag Bo3b in Halo last night?
by b1-66er May 06, 2010
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(noun -- GRIM-eez -- plural of grimmie) Grimmies are the collective group of enemies in the video game world.
Dude, wanna come over to my place, order some some za and kill grimmies after work tonight?
by b1-66er May 06, 2010
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