look up any word, like the eiffel tower:
 
85.
Someone acting retarded or slow; The act of doing something stupid.
"Wow Alex your such a derp."
*Drops phone in the road* "God stop derping with your phone"
by anmarie November 27, 2010
 
86.
If you have to ask you'll never know. (:
Shelley: "Oh my god you're such a derp"
Micheal: "What's a derp?"
Shelley: "Are you shitting me?"
by NOT a derp August 06, 2010
 
87.
derp... is an acronym for
D.Don't
E.Ever
R.Rape
P.Pigs
farmer: HEY!! WHAT DO U THINK YOURE DOING WITH MY PIGS!!
child: I'm rapeing them
farmer: THIS FARM BELIEVES IN DERP
by daxtonizawesome September 11, 2011
 
88.
A funny sounding word that is used after a dumb joke.
It's behind your ear, Derp!
by Cpt.Bob October 16, 2003
 
89.
When performing a combo on someone online that has one or more Straight Up Jumping Punches and a x-ray in it, in MK9.
GOOD GOD, DID YOU SEE THAT DERP I DID TO THAT GUY?!?!?!

I derped him hard, coach.
by R_X_S_D & T_B_Z_A August 16, 2011
 
90.
The word derp actually derives from the acronym D.E.R.P which stands for the "Disgruntled Employee Retaliation Program" and is used when you are intentionally causing a job related derp. Derping is considered a verb.

The act of "derping" or "D.E.R.P-ing" can either be physical or verbal in nature and is always done intentionally... or maybe not if you're lucky.
Examples of derping are as follows:

1. Peter, Samir and I took the company car to lunch yesterday and in the act of derping we almost had all four wheels of the car off the ground. It was awesome!!!

2. You hate your job so much that you keep breaking the copy machine intenionally, but of course nobody knows this. ...Unfortunately, this will often lead you to overhear the statement "I hate this printer it never freaking works."

3. Someone hates their job at the Hamburger Hut so much that they like to tell people Hamburger Hut undercooks the beef patties just so people won't eat there.
by meesolab November 14, 2010
 
91.
Someone who wont get out of your face or your life
Get out of my face you derp
by marzzol July 20, 2010