Derp 

From South Park. Originally meant to be said when someone does or says something dumb. Now, said by douchebags and trolls for any reason whatsoever...or sometimes none at all.

John F Kennedy: "Do not pray for easy lives. Pray to be stronger men."

Lindon B Johnson: "Derp."

Derp by GIVEmEEEEEEEEthePower December 8, 2011

Derp 

A huge and dramatical case of retardation

Derpy derp derp

Derp by Derps October 26, 2010

derp 

a stupid joke that you could see a mile away

derp de derp de derpidy derp

derp by jonnyg September 1, 2006

derp 

a stupid act committed by an individual which is regretted in retrospect.

passing out with your shoes off at a party is considered a MAJOR derp

derp by ferral penguin June 29, 2011

derp 

A funny sounding word that is used after a dumb joke.

It's behind your ear, Derp!

derp by Cpt.Bob October 16, 2003

Derp 

N. 1.Epic fail. An attempt at something of extreme greatness, but an utter fail. Antonym: Herp. 2. An expression used in the act of failing, often an exclamation. 3. The name for someone/thing that has failed.

V. Sucking really hard.

N. 1.
1: That guy ate it so hard on that triple pirouette.

2: I know, right?! What a derp.

N. 2.
1(while belly-flopping into a pool): DERP!

N. 3.
1: You honestly tried to pull off cooking 30 brownies in 20 minutes? You fucking derp.

V.
1: Have you ever herped so hard you derped?

Derp by RadioactivePuppy October 26, 2010

derp 

an expression of stupidity (noun)
an act of stupidity (verb)

AJ Fleming loves to say derp; one of his favorite things to say is "Obama derped up the government."

derp by Avrum F., my fake name June 21, 2012