A small dog possessing one or more of the following characteristics: bulgy eyes, squashed face, eyes that look in two or more directions at the same time, wandering lung, or comically vacuous expression. In short, any dog that arouses feelings of pity, revulsion, and the sneaking suspicion that it would have been kinder to have strangled it at birth.

E.g. pugs, Boston terriers, French bulldogs.
For the origin, do a google search for "hurr durr derp derp derp"
Is that a derp-derp or is she just squeezing her dog too hard?
by Boston Terrierist May 10, 2009
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A phrase used to express emotion, typically confusion or happiness.
Suzie: "I just love ice skating!"
Johnny: "Berp a derp derp! What?"
by YoGrannmotha August 27, 2010
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Rob Schneider derp de derp. Derp de derpity derpy derp. Until one day, the derpa derpa derpaderp. Derp de derp, da teedily dumb. From the creators of Der, and Tum Ta Tittaly Tum Ta Too, Rob Schneider is Da Derp Dee Derp Da Teetley Derpee Derpee Dumb. Rated PG-13.
by Timmaw July 29, 2006
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