A universal nickname for that really annoying girl that everyone hates. She could be your clingy ex-girlfriend or the girl in your government class that always asks stupid questions. If she's "Derpy" then chances are that everyone you know can find something they hate about her.
"Dude, derpy showed up at my house yesterday, she's so creepy!"

"Are you talking about that blonde chick with the annoying voice? I hate that chick, she gets on my nerves."
by thedirtydan May 17, 2013
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Quirky or very day dreamy or embarrassing. Mostly how to describe a person or object
Man jeffery , that guy is really derpy
by Bitchplease1212 November 2, 2015
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A character, or enemy in a game who is terrible and can beat noone. This does not apply to players. A player of this description is known as a noob.
Joe: man I love Minecraft squids

Tom: why?

Joe: cause they're so derpy
by friendofthewiz June 27, 2015
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Hey bro what does derpy mean???

It means callen06

Ooooo that retarted nonce

Yea doesn’t it make sense bro??
by Wee Lustyy FAP UTH January 5, 2020
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Pedantic, Long Winded, Wordy didactic, preachy, expository, pedagogic, punctilious, full of long winded BS.
1. Derpy is Instead of saying "I have to use the bathroom", he said "The universe has instructed me that I must use this period of time to evacuate my bowels. 2. "Derpiness, like entropy, tends to increase, but that doesn’t mean we can’t resist."
by jaquessschitt July 14, 2015
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A real word meaning of or related to the word derp.
"Man, that sure is derpy, and nothing else!" Said Sydney
by Derpyderpyderpderp January 26, 2015
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