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1.
To be under the influence of marijuanna.
I was so gumped last night I ate four hot pockets, a package of bagel bites, and two double cheese burgers.
by Scott D. Smith February 13, 2006
21 11
 
2.
A photograph that has been altered, usually by the insertion of persons or objects not present in the original. By analogy, similar alterations applied to other media. "gumped" is derived from the movie "Forrest Gump" which featured historical footage into which the title character was digitally inserted.
That gumped photo of W. huffing nitrous oxide was a gas.
by DamonDusk November 19, 2010
4 2
 
3.
social rejection, cast away due to lack of coolness
hank's rep is gumped because he hangs out with tom, and tom is a nerdy dipstich.

"i just got gumped by a buncha peens"
by tylesburg April 12, 2008
2 0
 
4.
having borrowed someone's lighter and then forgotten to return it.
Last time I let Suzie use my lighter she gumped it.
by Lakshmi April 27, 2007
2 3
 
5.
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
3 4
 
6.
To be shot in the ass.
Derived from the movie Forrest Gump.
Where Forrest gets shot in the ass.
When we was playing paint ball.
I gumped his ass.
by Spanky Dole July 10, 2008
1 3
 
7.
to horribly mess up a situation through blatant idiocy
HAHAHA, you gumped the hell out that man.
by The Dirty Hebrew July 05, 2003
2 9