To fall on your face or in an absolutely ridiculous fashion, often suffering and being badly injured in the act.
Boy runs into a tree and breaks his leg.
"Wow, that kid totally biffed it!"
by Shelista February 02, 2009
Get a biffed it mug for your father Bob.
Acronym for "Butt In Front". Usually associated with middle, to elderly women in stretchy polyester pants which, when pulled up high enough give the illusion of their ass actually being in the front. Synonym: Pumpkin Cunt
Dude, my old aunt's got a BIF so big, she can rest a Pepsi bottle on it.
by Jac February 27, 2004
Get a BIF mug for your Uncle Bob.
trying to be smoothe, or impress someone.... and you fall and make yourself look like an ass..
She was jumping over the net.. and biffed it..
by kj March 01, 2005
Get a biffed mug for your coworker Günter.
An Auto-Antonym, can mean to do something with great vigour or with little enthusiasm. Context specific.

1. To attack something with vigour. Evolved from the noun Biff meaning a sudden sharp blow or punch

2. To have sex very enthusiastically. Linked noun Biff.

3. To stroll about meaninglessly. Origin unknown.
1. Brigadier Ben Ritchie Hook in Evelyn Waugh's Sword of Honour Trilogy: "Time for a Spot of Biffing!" (In reference to attacking the Enemy during the Second World War, immediately before he storms a pill box, alone, armed only with a machine gun and grenades)

2.
D: "I heard you biffing last night O, keep it down next time"

O: "Sorry D, I had no idea I was so loud."

D: "Its alright man. It was pretty funny actually, you sounded like a cavalry charge"

3.
D: "How was your day?"

O: "It was okay I guess. I biffed around town for a bit, but it was pretty pointless"
by Lordy_UK March 31, 2010
Get the Biffing neck gaiter and mug.
Noun - pronounced "biff".
The unsightly bulge older women develop between their belly and their crotch. Stands for "butt in front".
See also minge pelmet.
The only thing I remember about my elementary school music teacher is her gargantuan BIF.

Look at the BIF on that miwlf.
by Cicero's Assassin August 29, 2007
Get the BIF neck gaiter and mug.
If someone is "biffing" they are lying or exaggerating about a situation. It can also be used by calling someone a "biffer" if they are known to lie.
He's a big BIFFER, ket sniffer, clit flicker.
Oi! Quit biffin you little rapscallion!
Mum's comin' up da stairs! nah, quit biffing bro.
by BigBiffer July 29, 2020
Get a Biffing mug for your daughter Sarah.