1- An expression of disdain towards an obvious joke, usually something having to do with slapstick or foolish behavior.

2- To describe a foolish or clumsy individual. One who is blissfully ignorant or unaware of their surroundings.

3- To do something foolish, clumsy, or silly.

Derp is an expression associated with stupidity, much like the earlier forms of interjections like “duh” and “dur.” In image macros, the subject is typically portrayed with eyes that are pointed to each side and a caption that reads “DERP.” The words “herp” and “derp” are often used in rage comics to replace nondescript names or parts of conversation. The first known instance of the word “derp” comes from the 1998 comedy film Baseketball by South Park creators Trey Parker and Matt Stone. During a scene where they are caught smelling underwear taken from a woman’s private drawer, Matt runs out of the room and says “Derp.”

Herp da derp derpa derp. A derpity

derpity herpa derp derp. Derp derp

derp. A herp derp herpity derpity derp.

one that expells an action of a complete and total fail

Someone who defies the laws of stupidity by being really, really stupid and derpy.

A word utterred when one screws up. origin: Matt Stone and Trey Parker in BASEketball. Used as an interjection.

1: The word that describes a particularly retarded face: A retarded smile, and the eyes pointing in different directions.

2: A word merely used as filler