a phrase used when someone makes a mistake, or says or does something stupid or ridiculous.
shannon: i wonder what frozen ice cream tastes like... ?

peta: derp
by A+inprocrastination June 07, 2011
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
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
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
When you don't know what you're doing, or will do.
GF: What are you doing?
BF: *at home, doing nothing*:Derping it
Gf: Ok, well let me know when you're finished cleaning.
BF*thinking*: Dumb Bitch...She's gonna clean it.
by gigamar February 01, 2012
Someone who thinks that the joke:
"Why did the witch ride her broom?"
"Because her vaccuum was too heavy!"

is worth laughing about.
That Linda is such a derp for laughing at that joke.
by Courtney_Elizabeth2013 January 29, 2012
a word to say in place of other words. can be used as any part of speech. it is usually used as an interjection.
guy 1: Aw dude! i blew myself up in minecraft!
guy 2: haha derp!
guy 1: shut up your a derp garrett
guy 2:well your more derpy than anyone i know!
by mwahahaiwillruletheworld December 13, 2011
See also herp:

Derp is a word that can replace anything in a sentence. It is somewhat of an everyword, such as fuck. Derp is most commonly used in le rage comics.
"Yo Derphina"
"Lets go to the herp n Derp"
"you look so derpy"
by Zombies<3 October 23, 2011

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