Faf stands for "Funny As Fuck" or "a faf" when used to describe something funny.
Jeff: Wanna hear a joke?
Stan: sure :p
Jeff: Why do women make better soldiers?
Stan: why lol
Jeff: Cos they can bleed for a week and not die.
Stan: ur jokes r a faf xD
by Ieatdog June 12, 2017
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A faf is something that is a nuisance.
Oh no, that’s such a big faf.
by sleepypudding December 22, 2018
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"I was trying to work things out with my best friend, but this bitch was being faf."

"I hate bitches who are faf"
by Yolo2million December 18, 2018
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(Fat ass fucking stroke) freaking out over nothing
I’m gonna have an fafs if I don’t have at soon
by Sillygoose56 November 12, 2017
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