DERF

A bipolar vampire that is AWESOME!!!!!

1. I am not DERF.
2. You are such a DERF.
3. DERFs are so annoying but awesome at the same time.

by Zachary Max Zimmerman January 17, 2009

Derf

Amazing, Happy, awesome.

If you spell it backwards it spells Fred.

A charecter on fred the movie.

The number between 5 and 6!

I feel derf today.

Dude: Hey fred!

Other dude: Yo it's Derf.

Freds twin in the movie Derf.

Kid: 5, derf, 6, 7.....

by scenequeen11 January 1, 2012

derf

verb: to do something stupid, immature. to lack rational judgment.

noun: the space underneath a man's scrotum before his anus; a normal person minus reason and accountability.

I can't believe I stapled my scrotum to my chair again. I really pulled a derf.

Dude, you only worked 3 hours today, don't pull a derf.

by Derfilicious January 6, 2008

Derf

Has a similar meaning to "fucker"

"Oh my God, You derf! What the hell did you just do? You Fucked everything up!"

by Emily May 6, 2003

Derf

"Derf" is a term that refers to the hair that grows on the perineum (aka "chode" or "taint")

Make sure you shave your derf before asking a lover for a rim job.

by blanatan July 16, 2006

derf derf revolution

More fondly refered to as "derf" or "derf-derf" he is the most idiotic and worthless kid in my psych class. He laughs at everything you say to him which more often than not is an insult, usually referring to his step-mom who has fake titays.

hey derf, you ever see your moms fake boobs? cause you are worthless like that

by Jeff January 31, 2005

derf

noun: An inept or foolish person, someone who doesn't use their head. On the PLATO computer system of the 1970s (which in many ways foreshadowed the Internet), a derf was one who left their computer terminal without logging out.

verb: On PLATO, a prank played on a derf. Sending out unpleasant or embarrassing messages under the handle (or "signon") of a person who'd forgotten to log out. Or ruining programs they've been working on.

noun: Wow, "Melvin of MIT" is a real derf! Look, he just walked out and left his terminal logged in.

verb: Hey Melvin, I just tried to run one of your programs and it looks like somebody got into it and put in a bunch of porn. Looks like you got derfed!

by Jay Young March 8, 2008