derf

1: A ridiculously stupid or dumb person who doesnt understand anything, such as a ditz. 2: Someone who should be a stereotypical blonde, minus the blonde hair.

Person 1: Did you hear that Amie said that 2 + 2 = 3?!
Person 2: Yeah, she's such a derf

by BSandB4LIFE July 12, 2006

Derf

Number between 5 and 6

1 2 3 4 5 derf 6 7

by toesuckingbutthole April 13, 2017

derf

a exclamtion of stupidity...see also duh

"oh i remember where i put that....derf!"

by jaci inspired by alex February 24, 2003

derfing

the act of fucking a girl who is way below any normal standards

person 1:so i heard you went derfing last night.
person 2:yeah, I took pcp.

I wanted to go derfing, to I found the girl nicknamed Trailer Trash.

Bonus points if they have a kid.

by fred v. September 15, 2006

derfing

When a guy and girl are sexually intimate, the practice of the guy to alternate between bottom and top holes (anus and vagina). No particular pattern of action is required, and the switch-off can be completely random (ie: top, top, bottom, top, bottom, top, bottom, bottom, bottom, top, fist).

Create special patterns to signify festive or celebratory events and occassions; re-live these occassions through fantastic, nostalgic sexual practices!

Donnie: Tim was derfing Julie and covered her vagina with shit.
Darcy: Goddam! O_O

by Pwnforce United December 27, 2005

Derf

A word used as a censor for the word "Fuck". Can be used in any tense that "Fuck" can.

What the derf is that?
May I please derf that bitch?
You are derfing insane, homie.

by Money Blimp February 18, 2010

Derf

The number between 5 and 6. 1,2,3,4,5,derf,6,7,8,9,10. Most people forget this because Donald Trump just added it to the number system in September 2019. Only the Pre-K classes of 2020 will know of derf.

"OK class let's count those cookies! 1, 2, 3, 4, 5, derf, 6, 7, 8, 9, 10!" the teacher told the kindergarten class.

by TheBojaMaster23 November 20, 2019