Friends of FOF, An illogical mastermind way of breaking a computer, because if friends of fof has fof in it doesn't that mean it should be Friends of Friends of Friends of Friends of..... etc.
Guy: You seen that kid going around school he keeps saying "FOF".
Girl: yeah it means he's a friend of FOF.
Girl: yeah it means he's a friend of FOF.
by KingFOF January 11, 2018

I’m worried for FoF in college.
by bobby12236382 March 11, 2024

A phobia of Felix. Anyone within a certain radius of Felix who suffers from FOF may experience severe anxiety etc. Alternatively, FOF can also be used as an acronym meaning "Fuck off Felix"
"No sorry, I cant play Ludo with you, I have Fear of Felix (FOF)"
Felix: "Wanna hang out today?"
Kitty: "FOF"
Felix: "Wanna hang out today?"
Kitty: "FOF"
by fof_sufferer October 21, 2022

Fear of failure. Used to describe the fear someone has when thinking about how they could do anything but succeed.
by Clarity4all August 11, 2025

Flat out fridays, when one strive for the best on a friday. Whether it be working or partying or any other activity. Can be used in a hashtag format, ie #FOF
by jakebrake November 22, 2013

by Fof enjoyer 2014 June 28, 2024

by Toninator May 21, 2009
