derp is the same as lol, except derp can be used in more fail situations
by ZUhhh August 26, 2009
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(Origin: This word was first used to my knowledge seven years ago when a friend of mine renamed an enemy in a video game from Dorp to Derp because it sounded funny.)

Noun
1: A stupid or incompetent person who believes that they are intelligent.
(I.E. President Bush)
2: A pathetic or unworthy adversary or opponent.

Verb
1: An intentionally stupid joke or action used to create a self-parody.
2: An easily aviodable mistake or flaw that is not addressed until it is too late to alter or fix.
Noun:
<i>1: Man, our President is such a derp.
2: Those derps never stood a chance against me.</i>

Verb:
<i>1: That joke was such a derp.
2: I really did not see the derp in my plan until it was too late.</i>
by Cheesus Crust January 16, 2004
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Someone acting retarded or slow; The act of doing something stupid.
"Wow Alex your such a derp."
*Drops phone in the road* "God stop derping with your phone"
by anmarie November 27, 2010
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A foul up. If someone is not doing their job correctly. A mistake. An unfortunate mishap. An event that disrupts the activity of others.
A man driving a truck runs over a speed bump and passengers are unaware of the speed bump so that was a derp. Someone is neglegent on the job and a colleague yells "derp"!. Someone gets an infection in a third-world country. I got an infection in another country so that was a derp. Someone does not tend to required tasks of their job which leads to foul ups. I should have been paying attention so that was a derp.
by George Korr March 4, 2006
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n. An obese man with a really fat egg head. They're usually bald and they have Harry Potter glasses.
Person 1: EW LOOK AT THAT UGLY GUY!!
Person 2: OMG, WHAT A DERP!!
by Derp7 June 25, 2010
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noun- A slang phrase to say or include when the topic being discussed is random, funny, or really stupid to the point that it is hilarious.
"I'm publishing this really funny picture of a chicken"
"You should caption it with derp, that will make it at least 5 times funnier!"
by DerpyCoal March 5, 2015
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