Person who’s mother smoked too much weed or drank too much homade liquor while he was in the womb, and the person ended up born a complete moron like the title character in Forrest Gump. An insult used against someone.
Guy : Man, there’s something seriously wrong with that boy.
Girl: Leave him alone his mother smoked tons of weed while he was on the way. It’s not his fault he’s Gumped
by banky123 July 20, 2006
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When a firefighter chooses not to bath for 24 to 48 hours, particularly after running a fire
I am sooo tired after than 2 alarm, I can't even shower right now. I'm Gumping it.
Nooo! Don't Gump it dude, that's disgusting.
by gumpysnasty September 15, 2016
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a faggot or someone who is just plain whack
"omg! look at those shoes they are mad tight son!"
"dem shoes is whack! UR A GUMP! getta outta here dawg!"
by Halla! June 14, 2007
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The act of running long distance with no set distance, destination or time constraints
"Rich I'm going for a major spot of gumping this evening, fancy joinging"
"Sorry Lee I can't, my legs still ache from that major gumping session last night"
by Richi Boi June 15, 2017
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Gay Ugly Motherfucking Punk

esp. in D.C. metropolitan gyms
The old men that you see in the locker room who'd never workout, but stays in the steamroom, sauna, and showers until they look like a raisin trying to get their peeps at you!

"What the fuck is that GUMP looking at?"
by 2 short July 10, 2009
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a person that is slow, mentally or physically
Josh Woods is a gump.
by Lucas Garcia February 1, 2008
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To "Gump It" is to Ejactulate at the site of a Sexual Organ. Such as in the movie "Forest Gump."
Oh My Gosh! Patrick had to Gump It when Samantha took off her shirt.
by Stevosux211 November 22, 2007
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