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An acronym meaning Flipping Across the floor. Used to express extreme laughter while chatting. Only to be used in situations that are actually too funny for a basic lol or rofl.

Other Uses:
Fatf-copter
Fatf-jet
Person #1 Today i fell down in front of the entire school and my pants ripped, i was so embarrassed. =[

Person #2 Fatf !!
FATF by -KILLALL- December 2, 2009
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If you don't follow the FATF recommendations, you'll get globally blacklisted.
FATF by Ritasauce March 23, 2026
Related Words

fatfished 

When an individual participates in a dating site hookup only to discover that the other individual is substantially larger than you were initially led to believe.
I went to meet Bumble #1 last night and she fatfished me. bumble tinder catfished
fatfished by NoPo10's May 24, 2016
spun-off from the popularization of the term catfish as seen in the documentary or on Mtv.

This directly relates to when a person intentional lies about their weight because they are far larger than they appear on their dating profile.
Bro: "Dude, that chick Beth I met of friendster, said she was 105 on her profile, when we met in person she actually weigh 105 more than me"

Dude: "Bro, you got fatfished"

Warning signs:
High angle close ups.
Animal profile pictures.
They list their body type as "a little extra"
fatfish by tubbytom February 7, 2013

Fatfished 

When a “bigger” gal only takes pictures from the neck or chest up to appear skinny but in person she’s totally a bigger gal.
Danny: what’s up with you and that girl you met on tinder bro?
Nick: Oh her? Nah man she fatfished me. Totally got me dude. Nothing like her picture.
Danny: Damn bro that’s crazy! Shit...
Fatfished by iamanthonydean December 23, 2018

Fatfatist 

One who serves tea to the "tourists" who come from Israel.
Fatfatist: Hey, how nice of you to drop by!
Israeli soldier: get on your knees..Who's your daddy?
Fatfatist: You are!...and would you like a coffee with that?
Israeli soldier: Wow your great,too bad you can't come back To Israel with me..
Fatfatist: Why not?
Israeli soldier: umm..prostitution is illegal
Fatfatist by Lubnani December 11, 2006

fatfluencer

Opposite of a fitfluencer. Fatfluencers promote body positivity and type 2 diabetes.
This weekend there is a camp for fat people to eat pound cake and rub thighs with fatfluencers.
fatfluencer by whattingh November 27, 2019