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)
von Swim-on-and-on-and-on.... 7. September 2012
a stupid person, or action
"Danny, your being a huge derp right now.
von MrSexy282 21. Mai 2010
Derp- a caption used on silly pictures such as memes.

A word to say after saying something stupid, or derpy.
A word meaning stupid.
Me: "Did u know that butter is a vegtable!?!"
Hater: "No it not you derp!"
Me: "oh, ok"
von TheAllyDerp 7. März 2014
One who, in an argument, takes a position, and when that position is destroyed by evidence and well-reasoned argument, acts as if the reasoned argument never happened, instead sticking to his original position while resorting to logical fallacies such as bad math, unwarranted assumptions, appeals to emotion, wishful thinking, false and deliberately misleading data and analysis, or ad-hominem attacks on his opponents. One who argues in bad faith.
Paul Ryan is a derp.

Salim Furth is derpy. Can put links here, search on yes-europe-really-is-in-the-throes-of-austerity

Avik Roy exhibits derpitude. Search New Republic. Search also Krugman blog bad-faith-and-civility-health-care-edition: "If someone says the sky is green, you prove that it’s actually blue, and the next day he comes back once again insisting that the sky is green, and this happens repeatedly, you eventually have to acknowledge that mannerly debate about the color of the sky just isn’t enough; you have to go meta, and talk about the fact that this guy and his friends just aren’t in the business of honest discussion."
von H. Rider Haggard 7. Juni 2013
A word that can mean many different things; usually negative. It can be a noun, verb and adjective. Synonyms include stupid, retarded, idiotic, idiot, dumb etc...

Variations of the word include derpy, derped, derpette, derpity der hurrrr. Herp is also related to derp and usually follows derp in a derpy interjection. Herping is almost always a verb, and when in combination with derp it does not have to be negative.
Noun: "Wow, that guy is a derp"
Verb: "Wow, that guy just derped everything up"
Adj: "Wow, that guy is derpy..."

Misc examples:
Person A: "Derp de durrrr... herp derp?"
Person B: "Herpity derp hurrr... Derp derp?"
Person A: "Hurrr :/ "
von FecesExplosion 24. Januar 2013
Universal word that can mean anything.
"That was derping awesome"

"Teach me how to derp, teach me-teach me how to derp"

"Go derp yourself you derping piece of derp!"

"Derp you!!"
von JvMarsh 20. November 2011
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.
von derpderpdog 19. Juni 2010
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"
von Zack Alv 25. März 2008

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