look up any word, like sparkle pony:
 
29.
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"
by aliatos August 23, 2009
 
30.
Describes a person who usually adds retarted remarks or statements to a conversation. The speaker is usually mocked and teased afterwards and sometimes forced to wear a DERP HAT and told they are full of Derp or the derp is strong with them
A person spots the obvious during a conversation, everybody then says to the person HURR DERPA, HERPA DERPA HERPA HURR. HERPY DERPY HURR.
by DERPA Herpa April 30, 2009
 
31.
Expression used in multiple ways. Usually used to describe an obvious or stupid situation.
Example 1: "Monica is meeting us at 7pm here" "What time?" "Derp"
by Zack Alv March 25, 2008
 
32.
Australian. Abbreviation of underpants.
Johnny busted Sarah wearing only her derps.

In summer, I sleep naked apart from my derps.
by spruce_goose June 22, 2005
 
33.
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!
by Broc March 06, 2004
 
34.
As used to describe a person who acts like, well....like a Dumb Egotistical Retrograde Prick. Give 'em a hammer. They'll do the rest.
This guy is a total DERP.
by mtnmedic January 08, 2014
 
35.
Exclamation used during shitty situations.

"derp" is not yelled, but simply said.

Used instead of yelling "FUCK" or "GOD DAMMIT".

Shockingly, "derp" releases stress, anger, and sadness better than yelling and cursing.

Opposite of merp.
Imagine this. Getting lost during a road trip. You become extremely hungry. For whatever reason, you have a strong craving for Chick-fil-A, and refuse to stop anywhere else. You set your TomTom to the nearest Chick-fil-A, but is on his period and sends you to mother fucking Disney World instead. When you finally find a fucking Chick-fil-A, it's closed and you remember that it's Sunday.

"derp"
by ShredGnarShark July 06, 2012