As used to describe a person who acts like, well....like a Dumb Egotistical Retrograde Prick. Give 'em a hammer. They'll do the rest.
by mtnmedic January 8, 2014

Bob: Hey! What's wrong with Kevin?
Pierre: Don't worry, he's just derping because he keeps dying in the scary game.
Pierre: Don't worry, he's just derping because he keeps dying in the scary game.
by Le French Man December 3, 2020

by Niamhwaite December 3, 2020

"I was mid-cough when the character scared me; really had me derping."
"Don't watch scary movies while sick or you might end up derping."
"Don't watch scary movies while sick or you might end up derping."
by SynSay December 3, 2020

1. Kevin was derping while playing a game
by Little Kevi god rest his soul December 4, 2020

by Kn1fewound January 26, 2021
