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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
 
57.
A universal word for anything
"that movie was derping awesome"

"derp you"
by Thatsoontobebuffblackguy November 13, 2011
 
58.
Degradingly erotic reproductive practices, recommended only for the most masochistic, wanton harlots. Subject usually has difficulty walking for like a day.
Shut yo' mouth and open yo' legs, bitch, yo' in for some srs derp.
by usernameunavailable November 09, 2011
 
59.
When one is blazed and attempts to leave a party/chief session.
Yo guys, I gotta get home, boutta derp.
by dixon yamada October 01, 2011
 
60.
a stupid act committed by an individual which is regretted in retrospect.
passing out with your shoes off at a party is considered a MAJOR derp
by ferral penguin June 26, 2011
 
61.
The state of being cross-eyed and generally looking stupid, possibly with some showing of teeth for effect. Being derp can be voluntary or involuntary
You would be derp if you lost your retainer, were perplexed by something etc.
by Daraghderp November 13, 2010
 
62.
Indicating retardation in both speech and thought; incomprehensible guttoral sounds intended as English predominantly spoken in the South. See also Southern Accent
Southerner: "Derp-de-DERP! Twang, twannnggg......"

Northerner: "WTF did he just say???"

Southerner: "Derp-de-DOOOO!!! Heheheh!"

Northerner: "Fuck it, I'll find I-95 on a map. Thanks anyway."
by Buck_Turgidson October 05, 2010
 
63.
A person who may catch you while you're doing something that you're not supposed to be doing.
Look out! It's a derp! RUN
by MSTJ September 27, 2010