Flak, from the german "fliegerabwehrkanone", originally referring to land-based anti-aircraft defense systems, has more recently been used when speaking about low velocity shrapnel-based war-time technology (ie the 'flak jacket' etc).
Figuratively, this phrasing is used to allude to broadly targeted aggressive interpersonal behavior.
Figuratively, this phrasing is used to allude to broadly targeted aggressive interpersonal behavior.
'he was feeling insecure and start shooting off a bunch flak without realizing she was the one getting hit by most it, what a careless bastard'
by sobieski November 21, 2009

by RipX555 May 12, 2023

Anti-air firepower, often seen as black smoke that erupts unexpectedly in midair, although at a certain range (there is a limit as to how far a flak shell can go before exploding in midair, thus allowing a pilot of an aircraft to anticipate flak).
"If you were paradropping, a flak shell will pretty much kill you. If you're lucky, you'll be blinded by the black smoke of the flak. Paradropping is scary in this case, but someone's gotta grow some cojones and do it."
-me
-me
by Dave June 23, 2004

by Yeetsire August 14, 2017

In the Unreal series of fps games, the act of spraying Flak cannon, rocket launcher, Instagib, or Biorifle shots over a large object or past a blind corner in the hope that such fire will cause a frag. Usually practiced by newbs and llamas.
Player: FFS stop flakking down the main corridor! You're just blocking the main access to the ball room!
by ps10n1c April 16, 2003

Flak is slang for any type of jacket. This can be a hooded or unhooded but it must be a jacket, it does not refer to jumpers.
James:Blud its cold out init
Me:Good observation my friend could you pass me my flak then to conserve my warmth?
James:Wagwan cool yeh safe one wun up here you go
Me:Good observation my friend could you pass me my flak then to conserve my warmth?
James:Wagwan cool yeh safe one wun up here you go
by The Ville June 16, 2007

Rob had some gunk in his teeth late at night so instead of walking to the bathroom he just flakked with Ingrid.
by PussicusS August 31, 2012
