ploppingのようなどんな単語でも探してください。
 
1.
An expression most likely originating from the series South Park. The expression was used for expressing, through terms, either an obvious observation or a stupid phrase.

The term is also interchangable with similar terms such as: durp durp, hurp-a-durp durp, and da durp durp.
Situation "Stupid"
Person 1: "Dan thought that Iraq meant a woman's chest."

Person 2: "Hurp a durp."

Situation "Obvious"
Person 1: "Who's Madonna?"

Person 2: "Hurp a durp!"
SkavenKnightによって 2010年07月09日(金)
 
2.
Something someone says during a stupid or obvious joke, OR, Something someone says to indicate that the person they are talking to is a retard.
Retard: Err... Is that chair got seatbelts?

Normal man: Hurp-a-Durp. Get in the car.
RyanLeroyによって 2010年06月22日(火)
 
3.
Noun. Someone who is slow, spasticated, handicapped or in any way mentally retarded.

Also an exclamation at one's own stupidity or the stupidity of a close party. Normally "hurpa-durpa-durp" (with added '-adurp's for added emphasis). Must be said in the fashion of a mongoloid.

Not to be confused with "hinga-dinga-durgen".
A: "Is like a turtle and a tortoise different cuz ones a reptile and da ova is a bird?"
B: "Stop being such a hurpadurp."

A: "OMG! Them things are liek only £20!"
B: "No, it says they're £200!"
A: "O right, I see... hurpa-durpa-durpa-durpa!!! *X-z*"
Atomic440によって 2010年02月06日(土)
 
4.
This word is a root for the situation that occurs when your brain goes "pffffffff".
Example1: Steve: O marez i cant remember anything for the exam. Will: Man u jus Hurp A Durp!
Example2: Michael: Bro, ima herp a derp ur face dick!
Nick: bring it foooo!
AzN Sensationzによって 2010年06月23日(水)