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

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The action of pure randomness and retardation.
Guy 1: My entire family just died!!!!
Guy 2:..........derp!
by itzadolfin!! May 10, 2011

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Symbolizing a retarded face, look, etc., making fun of it.
Im the Joker, Batman! DERP!
by BATMAN DERP February 06, 2011

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Sound simultaneously expressing supreme dorkiness and excitement of boston terriers.
derp, derp, derp (repeat until satisfied)
by BT Supreme January 20, 2011

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a stupid person, or action
"Danny, your being a huge derp right now.
by MrSexy282 May 21, 2010

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Describes a person who usually adds retarted remarks or statements to a conversation. The speaker is usually mocked and teased afterwards and sometimes forced to wear a DERP HAT and told they are full of Derp or the derp is strong with them
A person spots the obvious during a conversation, everybody then says to the person HURR DERPA, HERPA DERPA HERPA HURR. HERPY DERPY HURR.
by DERPA Herpa April 30, 2009

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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"
by Zack Alv March 25, 2008

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a stupid joke that you could see a mile away
derp de derp de derpidy derp
by jonnyg August 31, 2006

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