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)
by Swim-on-and-on-and-on.... September 07, 2012

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Usually a dumb kid with less knowledge then others, usually temporary, but can sometimes be forever.
yo dawg that kid was derp fo shure
by antl3r September 18, 2016

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Describes a person who reminds others of a potato
She is a derp, lol!
by Derpy_heichou October 12, 2016

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In always means someone who is literally a potato
I'm such a derp!
by Derpy_heichou October 12, 2016

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A nooby or pointless person, this word can also be meant as a way to say someone is stupid. See noob for the way derp can be meant in video games.
That guy is so derpy. He is totaly a derp, does not even know how to reload
via giphy
by StickmanOfDoom March 13, 2016

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Acting or looking VERY goofy.
Hunter Collard stop being a derp!
by _WIZARD_NINJA_ January 25, 2016

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Someone who is an unintelligent asshole.
He/she is such a derp.
by Sbi_Lynnie January 10, 2016

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Someone with low intelligence, or a stupid decision.
That guy is such a derp.

I just dun derped.
by Stgiga November 11, 2015

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