deef 

a word said when some is way beyond stupid as hell.

that deef just got decked in the face because he forgot to put his hands up.

deef by Ace trick April 23, 2009

deef 

when a male farts out of his penis

while taking a shit i deefed

deef by popeom94 November 10, 2009

Deef 

to defriend someone on Facebook

Man, if Darryl posts one more hipstamatic picture of his stupid kid, I'm going to have to deef him.

Deef by section111 October 13, 2011

Deef 

Making a "queef" style noise with your penis. Involves getting the air in your urinary tract to form a vacuum - letting the air out with a PRRRRRUITT-sound.

Lol, Steffen just deefed!

Deef by Deefmaster March 22, 2009

Deef 

A deef is basically a dick queef.

Johnny! Did you just deef!?" "Sorry mom." "You know the rule, no deefing at the table.

Deef by Master Bay Terr February 23, 2011

deef 

short for "default". Used to refer to one's profile pic/display pic on a social networking site

Sweet deef, dude!

deef by llllllllllllllllllllllll May 8, 2009

Deef 

A deef can mean a few things. But here's how cool people use it...

1. The act of ruining a fun situation or to increase the amount of faggotry within a given area. Like saying "man you deefin' up the place" or "man, jefferey be str8 deefin'"

2. Deef is also how homeless negroes say "thief"

3. Dick queef.

1. "that guy is kicking us out of the skatespot" "well he a deef anyways..."

2. homeless negro: "hey man that guy stole my cigarettes, he a damn deef"

3 fag: "i just deefed in your ass"
receiving fag: "neato"

Deef by IamTheDON July 13, 2009