FAFO is an abbreviation for the term "Fuck Around and Find Out", which is commonly used by software developers in chats when referring to certain programming techniques they do not know or understand but try to make use of anyway.
How do we operate the new JavaScript framework correctly? Just FAFO!
by King of se Grammatik May 11, 2021
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When an adult, regardless of creed, nationality or belief; takes action and expects there to be no consequences. Often at the expense of their own life.
Example

Becky: "Hey, did you hear what happened to Karen at the Capitol Hill Operation led by Big Sam and the KFC Militia out of Wisconsin?"

Johnboy: "Nah, what went down? Glorious liberation from the lecherous liberals?"

Becky: "No, she Fafo'd got shot. She died with one of those Trump flags my cousin Reggie was selling on Etsy for $15.95."

Johnboy: "Damn! There were Active Shooters?! Why didn't the police assist?!"
by Fafo89 January 7, 2021
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Fuck Around & Find Out - Our God Emperor Donald Trump's foreign policy message.
When I get re-elected, Iran and China are gonna FAFO. Believe me. I'm going to fuck them for billions and billions of dollars . Daddy's back.
by JPNC October 9, 2020
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An abbreviation that stands for "Fuck Around and Find Out."

It is mainly used as either an exclamation of confidence or a description of a past event.

In the United States there is a clear political connotation. It has mainly been used by radical leftists online but it slowly being co-opted by the radical right-wing as well.
Mike: "Man, these cops better not bother me at the protest. FAFO."

Jean: "Did you hear about the guy who tried to vandalize the Confederate monument and got arrested? FAFO hall of fame."
by 300iq_enlightened_centrist January 24, 2022
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Short for the rarely heard father-fucker insult, parallel to the word mofo.
I'd watch that girl, she looks a bit of a fafo!
by kookycahones July 31, 2009
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Fuck Around Find Out. Mostly this is used by bikers and gangbangers . It can be ment as a threat, a challenge, or a test (commonly of character)
As a challenge: "Aye what set you from esse"

"You finna FAFO homie ,what's good "

As a threat- Ma: "boy, you what it means to be god-fearing?! " Boy: "no?" Ma: "if you don't sit down and behave you gon FAFO"

As a test- girl1:"oh my God, I bet he has a huge ****" girl2:"idk bout you but ima FAAFO😈"
by Saintp6 October 10, 2021
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1. father fucker. a play on word of mother fucker: mofo.
You are a fafo, a father fucker. stop being a fafo.
by WordPlayer5 May 8, 2021
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