The act of failing epicly at something, especially when you forget exactly what the heck your doing in the wrong room of the house
Bob:"I just had a total herpty derp moment there."
Jim:"Wat?"
Bob:"I forgot what the hell I was doing there."
Jim:"oh."
Bob:"DERP"
Jim:"Wat?"
Bob:"I forgot what the hell I was doing there."
Jim:"oh."
Bob:"DERP"
by PatrickFails139 July 2, 2014

1; Holy crap, Ka-derping is the most amazing, vigorous, complicated activity ever!
2; Madison is the Ka-derping Queen!
2; Madison is the Ka-derping Queen!
by Starrelle June 19, 2011

When your partner is giving you a handjob but stops because there hand cramped and there to time to finish. Hi
by Themaxx64 January 21, 2018

by THE O SO GREAT NERD February 21, 2019

by Kadish_W January 5, 2019

Insulting name for a Marxist expressing delusional thoughts. When your conversation with Marxists inevitably leads to purely emotional and illogical arguments, Comrad Derp has made an appearance.
Socialism will work this time, exclaimed Comrad Derp.
History, science, and mathematics mean nothing to comrad derp.
History, science, and mathematics mean nothing to comrad derp.
by MISTER WA November 19, 2021

A man who lies when talking about how his ex-wife severely cut his finger. An abuser whose masculinity was challenged when his victim of an ex-wife wrote an OpEd in a national newspaper talking about her experience, and never once actually named him, but he still wrongly sues her for defamation, wins, but then screws up with the settlement. An actor who constantly is late to set & verbally abuses members of the film's crew.
Girl 1: Hey, bestie, I need to get away from my boyfriend.
Girl 2: Why? What's he been doing?
Girl 1: Girl, he's totally been acting like a Johnny Derp.
Girl 2: Oh wow. Yea, you REALLY need to get away from an abuser & liar like that.
Girl 2: Why? What's he been doing?
Girl 1: Girl, he's totally been acting like a Johnny Derp.
Girl 2: Oh wow. Yea, you REALLY need to get away from an abuser & liar like that.
by Wayne "Loony" LaPierre May 20, 2023
