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1.
Group or organization dedicated to awesome

"Grimms" are real men
"grimms are so much cooler than those damn nerd-ish joys"
by Retro Grimm May 10, 2009
 
2.
A medical term for the sickly nauseous feeling you get from reading too many fairy stories or over simplistic stories with deep moral meanings.
Origin: The brothers Grimm 1785 to 1863
Examples: “That book of fairy stories was really Grimm”, “That horror movie was Grimm” "What a Grimm Love triange story"
by Peter Glum December 16, 2007
 
3.
Not a good situation; bad fate
That crack dealer has a Grimm future ahead of him.
by NoKSiDe December 26, 2002
 
4.
Being really interested in accomplishing a task, yet not bored enough yet to actually do said task.
I'd really like to start developing Android apps, but I'm still Grimm on the whole idea.
by Rude OT May 23, 2011
 
5.
Noun: A racist, brainless tool who is full of themselves and has no idea what the hell they are doing.

Verb: When you say or do something stupid or pander to someone; when you are being an asshole.

Syn: Douche, Tool, Waste
A person who acts like he knows what he is saying but has no clue.

George Bush

The Cast of Jersey Shore

you're such a grimm
you were grimming it up back there.
by truthsay3r November 18, 2010
 
6.
G.R.I.M.M.
Greasy, Rectum, Irratation, Malfunction, Malinoma.
I ate some beans earlier today, and it made my ass become GRIMM.
by Josh Jackpot A. October 25, 2004