look up any word, like dirty sanchez:
 
87.
derp... is an acronym for
D.Don't
E.Ever
R.Rape
P.Pigs
farmer: HEY!! WHAT DO U THINK YOURE DOING WITH MY PIGS!!
child: I'm rapeing them
farmer: THIS FARM BELIEVES IN DERP
by daxtonizawesome September 11, 2011
 
15.
1, an exclaimation made after a moment of incredible stupidity or massive failure.

2, a facial expression with crazy eyes and a stupid lip.

3, when accompanied by a " :3 " indicates happy moment, or blushing with out making the user feel as stupid as they would if they wrote *blush*
guy 1 "she's fiiiiiiine, think I'll get any tonight?"

guy 2 "she's a lesbian."

*derp*
by omnomnomkittiez January 08, 2011
 
16.
A huge and dramatical case of retardation
Derpy derp derp
by Derps October 26, 2010
 
17.
the sound muttered, spoken, and/or by some mumbled after an instantaneous moment of extreme stupidity.
you:I HAZ MORE SODA THAN YOUUU! *derp*
Super Market: you're an idiot.
you: derp derp derp.
by THEKOOLKAT July 25, 2010
 
18.
when ones eyes go every which way. Usually dogs such as pugs derp.
whats wrong with your dog? Her eyes are going everywhich way.

dude. shes just derping.
by derpderpdog June 19, 2010
 
19.
one that expells an action of a complete and total fail
*Person 1 tries to walk up the down escalator*
Person 2: DERP!
by DerpYou February 07, 2010
 
20.
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
 
21.
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