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9.
A former regular at the now non-existent TFC server Edmonton Elite, which ran and had its heyday several months before the collapse of the World Opponent Network for all half-life games until they would only be accessable officially through Steam.

Duffman started out as a fair person, until he started getting jaded as he got closer to winning admin powers, from which point he became hypocritical, excessively stubborn, self-righteous, and saw things only from his Pov. See egotist. Not much is known from his reign as an admin of said server, although more than likely he still had these same traits, stubborn as he is.
He tried to be a good person but still failed at it, as his ego has got the best of him, and his stubborness
Duffman is not worthy of being named the Duff-man from the Simpsons
by Lethys March 09, 2006
 
1.
FOR SURE the greatest mascot ever made in history. Period.
Duffman can't breathe! OH no!
by Hyper January 27, 2004
 
2.
A fictional spokesman for the beer company:
"Duff".
He represents all that is malty
and alcholic.
Tends to do alot of thrusting
to the song "Oh yeah" by Yello.
The simpsons.
"Duff man is thrusting in the direction
of the problem!"
"Duff man can never die,
only the actors who play him!"
by Phoebe April 06, 2004
 
3.
1.The paid spokesmen of Duff beer.
2.His catch phrase is "Oh Yeah".
by Anonymous April 16, 2003
 
4.
A character from The Simpsons
works for Duff Beer
"duff man oh yere!"
"duff man can't breath!"
"duff man oh no!"
by Xhent August 28, 2003
 
5.
quite possibly the greatest mascot ever to be made in history. period.
by Anonymous October 11, 2003
 
6.
the spokesman for the duff beer company; a brewery stationed in sprinsfield. he is a muscular person with a trademark voice and saying 'oh yeah!"
duff man can never die, only the actors who play him.
by tim May 23, 2004
 
7.
A revered and feared Day of Defeat: Source player that pays his allegiance to Clan Red Fusion. There has been no mention of any one player that can contain his explosiveness on the battlefield, especially when he's sniping or using his insane pistol. But watch out, his carbine is to be given the utmost respect as you will be able to hear it in the distance, ripping holes through his victims. Have fun kids, I know he will....
Duffman! said for you to...TAKE A SEAT!
by Dufferino January 19, 2006