Fancy as Fuck - originated in Fort Worth, Texas and has taken off internationally via social media.
That girls dress is FAF
by Holsten November 22, 2014
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FAF - or 'Flex As Fuck', fullout - is used when something isn't just flex, but more than flex. It can be used in a number of situations, when something is just to flex for words. It can come in especially handy when one is shown a picture of one another and you are trying to describe a pose, facial expression, etc.

HAND SYMBOL:
There is also an hand symbol / gesture to indicate that something is FAF. The symbol uses two call me sign, with crossed pinkies.

ORIGIN:
The saying / meme 'Flex As Fuck', or 'FAF', is it is commonly abbreviated, was found by two high school students from the arts school of Antwerp, Belgium, in 2016, when they were on an excursion in Leuven.
Wow, that image looks FAF.
- I know, right. (FAF-hand gesture)
That girl's style is just FAF.
by roanlove October 30, 2016
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Ariel: "You are gay! AHAHAAHA".
Ilya: "FAF".
by farmer420 May 21, 2019
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Someone who is fake as fuck. More specifically this person is also flailing as fuck, and flaky as fuck.. making them a triple FAF. This fake, flailing and flaky as fuck person is notorious for getting drunk and throwing their body and limbs all over the place, including flailing their pu$$y open for men. This FAF is flaky and fake.. notorious for ditching plans with friends the minute one of her men texts her!
Katelin ditched us again.”

“I’m not surprised. That FAF is always leaving us for men.”
by xtinaaaaaa May 5, 2020
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Fuck and forget.
HIQI with a hint of amnesia.
"Dude look"
"Meh, so many that look like that in Florida & DC, let alone Cali, FAF that."
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