64
The toughest man you will ever meet in your life, The most manleyst man you will ever man, He will make your life hell
run workout you will cry duff Duff will make your life hell and you will like it
by Big Boy balding November 01, 2011
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65
Generic term for beer. Originates from The Simpsons cartoon series, where Duff is the brand of beer characters drink.
"Pass me that duff". "You bring the weed and I'll bring the duff!"
by Karl Steiger January 31, 2004
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66
Designated Ugly Fat Friend
an unattractive female who accompanies a group of females to either:
A. make the others feel better about themselves
B. gain access into an a social circle she would never be able to attain
Man, I was talking to this really cute girl. Next thing I know, her DUFF arrived and cock-blocked me!
by pidgezzz March 21, 2010
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The vengeful act of crapping on a lover's chest while they sleep.

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67
–Adjective (duff)
questionable

-Noun (duff)
a nonsensical object or mass

-Verb (present-tense: duff past-tense: duffed)
to act without any sense of tact

-Adverb (duffly)
clumsily, without purpose or explanation

-Unit of Measurement (duffs)
a span of 10 decibels
"I dunno man... that steak looked pretty damn-diggedy duff..."

"Stop being such a lousy duff!"

"Remember that time Steve duffed lucratively for hours?!"

"He duffly fell in to the clearly labeled and fenced off tub of acid"

"That fire alarm rang at at least 1.5 duffs! It gave me otomycosis."

"that duff duff duffly duffed at 50 duffs!"
by Boodda November 10, 2008
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68
the action of punching someone. usually in the face because it is like you are caving it in. can apply to any area of the body however.
by ~Reign~ October 14, 2006
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69
Designated Ugly Fat Friend. If you know of a DUFF, You are a DUFF, or you've heard of a DUFF, you are in luck. Because I hate to break it to you but you are a DUFF. You don't have to be fat or ugly to be a DUFF. DUFF is just a catch for a person who doesn't fit in. If you ever felt left out, excluded, or just different it means you were a DUFF and potentially are one now. But don't worry. Being a DUFF is a good thing. It means you are an original person. SO pump your fist in the air if you're a DUFF!
by ThtYllwBch June 09, 2015
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70
To catch a fart in your hand and put in someones face. A duff is similar to a fast ball, however it is not thrown.
Can I duff you?" "Yeah, duff me! Gimme yer duff!
by Andrea, St. Petersburg, FL September 11, 2010
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