Backing off from a prearranged 50/50 gamble, a "flip", in an unfair way upon realizing that your chance of winning the flip is below 50%.
A: 100$ flip anyone? All-in regardless of cards
B: Agreed
B: Gets dealt King of Spades, 9 of Clubs
A: Gets dealt 5 of Hearts, 2 of Spades
B: Raises to 100$ and is all-in
A: Folds
B: Huh?
A: Uhh, bad connection
B: Dishonest bastard... Brb making sure everyone knows you're a grimming cheater
by Asdf69-666 August 15, 2009
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Grimming is the opposite of grooming. In which a minor "grooms" an adult.
Prisoner A: So what are you in for?
Prisoner B: For grimming a mentally unstable 21 year old
by GrimmerRumbl3 November 10, 2020
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Making a large bet in HSNL poker, with a dominated hand, which is technically defunct based on the most basic of probabilities.

Lol - I knew teh fish was Grimming it, so I called with middle pair. Ship teh 5k holla.
by bbv4life November 7, 2006
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something that is rank/disgusting/horrid/yuk/mank/rank
eurgh, that soup you made is grim!
by Claireee,x May 10, 2009
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Verb. "To grim" is to have your voice be disconnected (RTC connecting) when on a Discord voice channel or voice call. Originally from the Harry Potter series.
Ahhh, I'm grimming again, let me leave and rejoin!
by eriicali May 24, 2021
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To get stumped with a lot of homework from your teacher.
(Based on Mr. Grimm)
William: Damn, I got a lot of homework from Grimm.
James: Ahahah, you got Grimmed!! You suck! Oh wait,
I'm in his class too! Fuck!
Carlton: What is a doodad? Ahahah you got owned!
William and James: Fuck you.
by teh_james September 16, 2005
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A complement, sometimes used to describe Black Metal music and attitude. Similar to kvlt and tr00.
Transilvanian Hunger is grim!
by Velvokai May 22, 2005
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