derp

1. slangDraws attention to an act of foolishness or stupidity.

   I put chips in my soup instead of crackers. Derp.

   1 more example

   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>

2. slangA placeholder for unimportant details, blah blah blah.

   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

   1 more example

   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>

present singular third person derps · participle present derping · participle past derped · past derped

1. slangTo act stupidly or foolishly.
2. slangTo 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

3. slangTo 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

   1 more example

   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

plural derps

1. slangA person who acts stupidly or foolishly; a person who derps.
2. slangA stupid mistake, stupidity.
3. uncountableThe 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