derp

Meanings

1. Draws attention to an act of foolishness or stupidity.
2. A placeholder for unimportant details, blah blah blah.

1. To act stupidly or foolishly.
2. To make a stupid mistake.
3. To have one's eyes pointing in different directions; to exhibit strabismus.

1. A person who acts stupidly or foolishly; a person who derps.
2. A stupid mistake, stupidity.
3. The constant repeating of an opinion after facts have proved it incorrect, especially as a rhetorical tactic.

Etymology

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.