Fo means to fuck off. It is mostly used while texting because it would just be wierd to say fo in public
Dude u are annoying me can u FO
Acronym for "Friendship over".
Janet: I hate you! You're the worst friend ever!
Florence: FO!
fo basically mean bruh or nigga
fo i'm finna smack the shit outcha bitch ass
2:stop playin wit me fo im finna crack the shit outch u
mr petiti yells this whenever he means to say 4
Mr. Petiti yelled "FOOOOOOOO MINUTES!!!!!!!"