To be scared and cough at the same time
"Kevin almost died, he started to derp so hard."
by dijoelcuervo December 3, 2020
Get the to derp mug.
We you Accomplish something so stupid, you get hard.
Rednecks get a derp boner when someone says “here, hold my beer!”
by Ink Freak December 31, 2018
Get the Derp Boner mug.
Shot right in the face at close range with a large caliber gun.

2. Made a stupid mistake.
Mike Just got derped with a 12 gauge shotgun.
Aaaaaaaaaaaaaaggggghhhhhhh! I derped!
by When in doubt, C4 March 28, 2016
Get the Derped mug.
A confused erection for odd reasons.
I was sitting on the couch and a friskies commercial came on and I got derp dick.
by AndySeentDat January 29, 2016
Get the derp dick mug.