Top Definition
Phrase used after something completely obvious is stated, usually to provoke someone.
Gary: "Did you guys know that the Alphabet Song and Twinkle, Twinkle Little Star have the same tune?!"

Stef: "Derp der on the der der!"

DJ: "Gary, sometimes I wonder why I hang out with you."
#duh #no shit #obviously #der #dumb
by deejinator27 May 14, 2013
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