In toronto, its slang for describing something cool, awesome. Used in conjunction with words such as dirty, ill, and sick.
Person 1: Yo the toronto raptor just made a SICK dunk!

Person 2: Word...that was mad grimy styll
by N-M-A-N November 3, 2009
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To do something fucked up to someone, which is usually funny
1st Person: Yo, i pissed in this dude's mouth wash, and he didn't noticed and still used it!

2ND Person: HAHAHA! THATS Grimy!
by Antonio and TJ November 17, 2002
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Something that is good or heavy
" Did you see that grimy car
by natman April 22, 2003
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Used to mean something dirty, but now means something is nang.
by Snowy (formally kilo lobo) August 27, 2003
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Ayo, his Tim's was grimy, but I was like, if that's the way he gonna rock em it's aight wit me.
by spoleze February 16, 2003
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