Probably from dur, a British informal exclamation for “stupid” or from duh, an exclamation indicating faltering speech and assumed stupidity, glottalized for emphasis. Popularized by BASEketball (1998) and "Succubus", a 1999 episode of South Park. See also twerp possibly related to Welsh twp meaning fool.
Derp was used in the movie College Rhythm (1934) to refer to a nerdy or awkward type of person.
Meanings
(slang) Draws attention to an act of foolishness or stupidity.
Now that I think of it, i'm surprised that you didn't make fun of his first name as well- 'How could you believe in a guy who has a girly first name?' derp- you are a fool. 1997 February 25, Pete Treichler, “Re: Patrick Incompentence Redux”, in alt.sports.hockey.nhl.pit-penguins (Usenet), message-ID <Yn4ObEO00iV6A1SFx_@andrew.cmu.edu>#1/1>:
I put chips in my soup instead of crackers. Derp.
(slang) A placeholder for unimportant details, blah blah blah.
Me: Hi, remember me from SSG? Can I ask you about herping the derp?
R1: Oh, hai Tom. Sure, that would be the derp that was herping blah blah blah... 2011 January 10, Tom Allen, “Re: Expression of a woman's sexuality”, in soc.sexuality.general (Usenet), message-ID <add2880c-51f2-48ba-bcb1-4f9bff60dd58@l24g2000vby.googlegroups.com>:
Rob Schneider derp dee derp. Derp dee derpity derpy derp. Until one day, a derp a derp a derp a derp. 2002 November 27, Trey Parker, “The Biggest Douche in the Universe” (14:28), in South Park, season 6, episode 15:
Probably from dur, a British informal exclamation for “stupid” or from duh, an exclamation indicating faltering speech and assumed stupidity, glottalized for emphasis. Popularized by BASEketball (1998) and "Succubus", a 1999 episode of South Park. See also twerp possibly related to Welsh twp meaning fool.
Derp was used in the movie College Rhythm (1934) to refer to a nerdy or awkward type of person.
Meanings
(slang) A person who acts stupidly or foolishly; a person who derps.
(slang) A stupid mistake, stupidity.
(uncountable) The constant repeating of an opinion after facts have proved it incorrect, especially as a rhetorical tactic.
English has no word for "the constant, repetitive reiteration of strong priors". Yet it is a well-known phenomenon in the world of punditry, debate, and public affairs. On Twitter, we call it "derp". [2013 June 4, Noah Smith, “What is "derp"? The answer is technical.”, in Noahpinion (blog), Blogger, archived from the original on 09 Jun 2013:
Probably from dur, a British informal exclamation for “stupid” or from duh, an exclamation indicating faltering speech and assumed stupidity, glottalized for emphasis. Popularized by BASEketball (1998) and "Succubus", a 1999 episode of South Park. See also twerp possibly related to Welsh twp meaning fool.
Derp was used in the movie College Rhythm (1934) to refer to a nerdy or awkward type of person.
Meanings
(slang) To act stupidly or foolishly.
(slang) To make a stupid mistake.
Wait, so we're allowed to have magic items from the start? I must of derped pretty hard. 2011 August 22, Scion-of-Fenrir, “Re: 4e Forgotten Realms Campaign”, in Google Groups: /tg/'s Google group, 184e4b33-8013-4f8f-b312-ce498111076a@b34g2000yqi.googlegroups.com:
(slang) To have one's eyes pointing in different directions; to exhibit strabismus.
Also, there was a Derpy cameo in this one, but she didn't have derped eyes. 2012 April 22, Double Eight, “Re: Next Meetup”, in Google Groups: Windy City Bronies:
The eyes are wired to the same I2C address to prevent derping, but the three red mouth LED matrices are capable of displaying anything that fits on an 8×24 LED matrix. 2012 October 25, Brian Benchoff, “Electronic demon costume is surprisingly unnerving”, in Hack A Day: