noun: a large male aged 18-45. This male has an over-inflated ego, a small level of intelligence, and spends way too much time at the gym. Biff's enjoy wearing sleeveless shirts, flexing in casual conversation when it is not called for, loudly announcing how much cheap beer they have drank, and aggressively pursuing females with 1950's style machismo. Often employed as bouncers.
"This biff cut me in the line to the bar so that he could order his buddies a round of Natty Light."
"That bouncer who cut his sleeves off is such a biff."
"I want to talk to that girl, but this biff won't leave her alone."
"That bouncer who cut his sleeves off is such a biff."
"I want to talk to that girl, but this biff won't leave her alone."
by MEvans January 1, 2009
Get the biffmug. by biff March 22, 2003
Get the biffmug. by trolleyman2 November 7, 2010
Get the biffmug. A large amount of fat on the lower stomach of a humain begin. The fat above the crotch. Mostly associated with morbidly obese people.
Damn, that bitch is fat, look at the size of her biff.
The man was so fat that his biff hung between his legs.
The man was so fat that his biff hung between his legs.
by Keiss June 11, 2006
Get the Biffmug. To completely fuck up some life decision so bad, it fucks up the lives of those around you. Also describes any situation in which you fuck something up that most people do not. Can be used to describe any course of action you take that most functioning adults look at as tremendously stupid. #biffon #biffit #fuckit #cantadultforshit #biffon
"Dude, everyone knows that you have to pay the fucking water company to continue to get water service, but you know what, biff on!"
"Dude, I really biffed it. I knew I should have pulled out of that skank!"
"Dude, you keep biffin it, and everyone is going to know we are high as giraffe balls."
"You know what dude, I don't even like this restaurant, go ahead and urinate on the floor. Fuck it, biff it!"
"Dude, I really biffed it. I knew I should have pulled out of that skank!"
"Dude, you keep biffin it, and everyone is going to know we are high as giraffe balls."
"You know what dude, I don't even like this restaurant, go ahead and urinate on the floor. Fuck it, biff it!"
by Ice_Ice_PayMe March 19, 2017
Get the biff itmug. 
by Tad Heller March 4, 2004
Get the Biffmug.