This is an Acronym being made famous daily meaning; Fuck Around N(and) Find Out. It can be used as all 4types of Noun, adjective, or a verb even. Basically its kind of like the word Smurf in Smurf language.
This FANFO ass dude always testing someone patience.
Hey brother you better calm yo ass down before yo as FANFO!
Hey brother you better calm yo ass down before yo as FANFO!
by Mr Webby April 4, 2021
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