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1- An expression of disdain towards an obvious joke, usually something having to do with slapstick or foolish behavior.

2- To describe a foolish or clumsy individual. One who is blissfully ignorant or unaware of their surroundings.

3- To do something foolish, clumsy, or silly.
1)
Movie Character- "Oh man, I accidentally put laxatives in the Principal's coffee!"

Movie Theater Patron- "DERP!"

2)
John- "Lauren was bringing in the birthday cake, but she couldn't see where she was going so she knocked the houseplant over"

Kelly - "Yeah, she means well, but she's pretty derpy sometimes"

3)
Walt- "I think my favorite Disney character is Goofy. He was derpin' before derp was even a word"
Derp by Max Harley October 10, 2012
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Herp da derp derpa derp. A derpity

derpity herpa derp derp. Derp derp

derp. A herp derp herpity derpity derp.
Derp 1: Herp derp?

Derp 2: Derp.

Derp 1: Derpa herp derp derp?

Derp 2: Derp...
Derp by ElTalonO August 30, 2010
Related Words
derp Derpy Derping derpes Derper Derped Derpin derpression derp-derp Derpa
one that expells an action of a complete and total fail
*Person 1 tries to walk up the down escalator*
Person 2: DERP!
derp by DerpYou February 7, 2010
A word utterred when one screws up. origin: Matt Stone and Trey Parker in BASEketball. Used as an interjection.
(Imagine a scene where a guy is sniffing a girl's underwear, only to discover it is her mom's) DERP!
derp by Broc March 6, 2004
1: The word that describes a particularly retarded face: A retarded smile, and the eyes pointing in different directions.

2: A word merely used as filler
1: Used in a picture (let's use the megaman image just for the hell of it), derp is the quintessential word for itself. 'Nuff said.

2: Person 1: "So... I'm bored"

*5 minutes later*

Person 1: "Derp..."

Person 2: "Yeah"
derp by aliatos August 24, 2009
Someone who defies the laws of stupidity by being really, really stupid and derpy.
Melinda: I made a character named Aaron Brancher. He's going to be a rancher!
Friend: God, Melinda. You're such a derp.
Derp by camille is black June 12, 2011