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m is short for most or mos
m deffer is most definately
mos def is m deffer because deffer is short for definately
m deffer by 99pl April 24, 2007
Related Words
deffed duffed deefed Daffed defred delfed Derfed Duffed It deafed deafed off
Duffed (v) - The act of getting used and or manipulated by an attractive, mentally unstable person of the opposite sex. Unfortunately this includes an abundance of flirting, profound mixed messages, and sexual enuendos that don't actually lead to SEX, merely the illusion that it will. The Duff usually ends by the Duff-er getting back together with their original girl/boyfriend, leaving the duff-ee with a killer case of blue balls/dry-gina.
Man, I thought this relationship was going to go somewhere, but really I was just getting Duffed!
Duffed by DFaFH April 9, 2006

Double Duffed

1.) To drink two Icy-Cold Duff Beer at once.
2.) To be accompanied by both Haylie and Hilary Duff
1.) Homer Double Duffed his way out of Moe's.
2.) Some dudes would love to be Double Duffed.
Double Duffed by Jestr November 14, 2007
Verb: to Derf is to purposfully send someone the wrong way, or to trick someone into going the wrong way. You have to strike it with such confidence and not to stutter that they do not second guess you and still believe they are going the right way. Even when they know they have gone the wrong way, they blame or doubt themselves.
This guy asked me for directions and I totally derfed him.
Derfed by Joeseppe July 15, 2019

Im Duffed Out 

Im Hella faded right now i dont know how im going to make it home tonight. i dont even know where the fuck i parked at. I'm Duffed Out
You tryna get Drunk today im Duffed Out.
a totz radder awesomely awesome way of saying definitely.
:)
jeanine: cherie is totz smelly
cody: defferz
defferz by Jeanine Howton June 27, 2008