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An expression used when a person, or yourself, has done somthing extremely stupid and dopey
Person 1: Dude, I just hit my head on the door.
Person 2: HERP DERP.
by Kommandant November 25, 2009
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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3
Another way of saying duh.
Stacey: I ordered the food, it will be here in 10 minutes.
Louise: okay when will it be here?
Stacey:herpderpderpderpdurrrr.
by TheObieOne May 10, 2010
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4
the answer for every physics problem according to idiot hipsters that think they are so cool
Q: What is the force of gravity?
A: herp-derp
Teacher: you're a moron
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5
Something idiots say. Usually it is supposed to indicate stupidity in somebody else, but the person saying it is usually the dumb one.
by Turbo_Phoenix April 26, 2011
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