look up any word, like sex:
 
22.
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
281 284
 
23.
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
34 37
 
24.
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
662 665
 
25.
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
48 51
 
26.
A sexual act where one inserts their tongue into another's anal canal.
"Dude, I totally derpped that girl."

"Wanna derp?"

"We were derpping each other."
by iBanged Zooey November 19, 2013
5 9
 
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
 
28.
A word that means pretty much nothing. Something to say when there is nothing to say. It goes with the word Herp which is essentially the same thing.
Mayumi: Derp
Yuuma: I am going to make "derp" into a real word!
People watching: Herp Derp
by Mayumi Bloodraine July 10, 2012
12 16