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to mess up a word by mispronouncing it.
I un-derfed my cat.
by Underfed June 05, 2010
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9
The process of: executing a handstand; masturbating during handstand; ejaculating in direction of mouth; regaining post orgasm senses and gracefully avoiding free-falling wad. A professional sport in parts of Oregon.
Did you hear Sunshine Bear died while in the derf last night?

No…how?

His dad caught him in the act and beat him to death.
by Lupus Lavign. July 12, 2006
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10
A bold and corageous urban warrior. A fierce enemy.
We should all strive to be a Derf.
by Pedroumbrella October 18, 2007
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11
Kick-ass cartoonist. Draws & writes 'The City'. Created 'My Friend Dahmer'. Not respected by enough people.
by Raewyn June 14, 2004
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A wonderful humourous individual. Usually an adult. The kind who would make an excellent coach, parent etc.
We should be so lucky as to have him as a coach, he's a derf.
by rellim April 07, 2005
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13
Doesn't ever Research Facts

Noun: A failed attempt to satirize an idea due to lack of comprehending said idea.

Verb: Failing an attempt to satirize an idea due to lack of comprehending said idea.

Person-describing noun: A person who's failed an attempt to satirize an idea due to lack of comprehending said idea.
This stupid Facebook repost from FOX News is such a DERF.

Some crazy door-to-door preacher came over and DERFed for ten minutes about how bananas prove Creationism.

He says I'm going to jail for cutting off a mattress tag. What a DERF!
by Logic-Bomb July 25, 2014
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