The act of one male approaching another male from behind and putting his hand in between the back of his upper thighs and moving his hands in a back and forth slapping motion.

This act must be performed while calling out the phrase, "grimy trout!"

This motion is an exact replica of the male trout swimming up stream during mating season.

To be extra grimy, the man will move his hand in an upward motion, coming in contact with the male genitalia, testicles, and or gooch. This motion is done while calling out the phrase, "grimy trout, swimming up stream!"

The act of performing a grimy trout should never be done in a homosexual way, but only as a friendly way to say, Hi, or How are you? It can also be done to people who you really don't like and want to humiliate in public.

If not done in a friendly way, only grimy trout chaches, frat stars, and others who you really don't like.
grimy trout- Wow Paul, that grimy trout really was the grimiest thing that anyone has ever done to a chach like me.

Woa! What did you just do to me?
You know you liked that grimy trout fag.
by d-north July 10, 2008
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Slang term for pubic hairs after intercourse. (Dwarf-Weed= pubic hairs)
"Runescape has an item under the name of Grimy Dwarf-Weed"
by Mnive December 12, 2009
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Someone who does some fucked up shit to a person who so called a friend and will stab you in the back for nothing
Mj isn't one grimy nigga you don't need to trust
by Fkojg December 28, 2016
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The definition of something nasty and unbearably gross something that has no other word to describe it but of its own.
"Ugh sayda you're so grimy!!"

"Grimy sayda!!"
by Prettygreeneyes December 09, 2014
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she lifted her shirt on facetime with 3 dudes. That shit is grimy
by bangenergydrinksslap August 20, 2020
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Slang: (n.)
A person known by others to do their dirty work. Will do whatever they feel is right, knowing it's not, for their success. Dedicated with a passion that at times can be negative and other times positive.
Nickname:
A name given to an individual with no remorse for anyone against them. Used mainly as an alias.
"That's a Grimy as* ni**a."

"Aye look! There goes Grimy again."
by 70ny 574RK May 16, 2017
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A man on the down low with a family member or even with your niece.
Grimy:

Carlos: she did what?
Jessenia: she slept with her aunt's bf

Carlos: yo that shit's grimy!
by Takemetojerryspringer August 14, 2016
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