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27.
To have a retarded face, or expression causing others to find it funny, creepy or just plain stupid.
Ex. 1 Jennifer Lawrence is the queen of derp because of the faces she makes.

Ex. 2 "I'm bored."
"Me too."
*Awkward silence.*
"Derp."
"Yeah..."

Ex. 3 Jennifer Lawrence Queen of Derp trended on Twitter worldwide. (FACT)
by Swim-on-and-on-and-on.... September 07, 2012
13 17
 
113.
a cigarette
yo man, toss me a derp bro
by VVVFFFFFF August 09, 2008
3 58
 
114.
A state of being. To be extremely messed up, usually from excessive amounts of good marijuana.
WOW that purple was delicious, DERP!!!
by SAMPSON September 10, 2003
11 69
 
115.
a word used at the end of almost every sentence by anyone with a song in their heart. can also be used to express almost any feeling imaginable, so people can read your minds easily.
Fear- "Oh no! a hungry pack of flaming aligators!DERP!"
Surprise- "Ninja stars were just teleported into my intestines!DERP!"
Recovery from bad joke- "So he said 'what wife!'......a-DERP!" (rolling laughter)
by Blaine December 25, 2003
21 80
 
116.
A derp is the guy in the bright clubby striped shirt who waits in line for 2 hours to get into, well, a club. Granted, it’s nighttime, but the derp still wears the euro-trash sunglasses. The derp has far too much pomade in his hair. On top of this, the derp acts like he is a member of high-society, when in fact the derp is actually just high-maintenance white trash.
let's get out of this bar, it's loaded with derps.
by fycfan#1 March 31, 2005
13 73
 
117.
1. Male genitalia (aka. Johnson, Purpleheaded-yogurt slinger, schlong, etc.)
Scott: Hey Michael, you suck man.
Michael: Slurp my derp Scott.
by Mawilson06 October 11, 2005
7 70
 
118.
(Origin: This word was first used to my knowledge seven years ago when a friend of mine renamed an enemy in a video game from Dorp to Derp because it sounded funny.)

Noun
1: A stupid or incompetent person who believes that they are intelligent.
(I.E. President Bush)
2: A pathetic or unworthy adversary or opponent.

Verb
1: An intentionally stupid joke or action used to create a self-parody.
2: An easily aviodable mistake or flaw that is not addressed until it is too late to alter or fix.
Noun:
<i>1: Man, our President is such a derp.
2: Those derps never stood a chance against me.</i>

Verb:
<i>1: That joke was such a derp.
2: I really did not see the derp in my plan until it was too late.</i>
by Cheesus Crust January 16, 2004
11 77
 
119.
A much less vulgar way off displaying your frustration for someone. Can be used to replace a cuss word.
Lenny, quit being a god derp hippie! Lenny is such a derp. I wish Lenny would derp himself in the derping derp!
by Nick Weismiller September 12, 2005
5 77