Transitive Verb, recently coined by Randal Amschel, son of Peter; This phrase is used after someone has fucked up or negligently or otherwise damaged persons or property. As soon as the damage has been rectified by the actor and settled between the parties if anyone in the future mentions the initial injury, the speaker should be reminded by the use of this phrase of the complete resolution of the matter between the parties.

Sex without a condom. The bare back part of the phrase refers to riding a horse without a saddle.

I type sumting wong halp

Sex without a rubber

Fuck Flash Back... you just fucked some chick the other night, while you were off your fucking face.. then, when your mind wanders...
BAM. FFB...

the mind shows scenes of embarrassing facial expressions, slips, trips, falls..
maybe even the cum face... if you were lucky...

most likely to strike whilst at your shit job, or at a boring meal with the rentals. The physical reaction to the FFB manifests itself in the facial area, and prompts others to ask what is the matter with you...

Basically means to BACK UP, but used when someone is angry, almost to the point of losing it.

just like "we fight back," only funnier and more Italian