Fo 

to go take naked pics of urself and send it to the person who said it to u

Person A: GO FO YOURSELF
Person B: OK
5 mins later

Person B: here look
Person A: ewwwwwwwww

Fo by anedoki July 9, 2009

Fo 

"For Sure" Fo Sho, Yes , Absolutely. Can be used with other words and slang such as "Mad Fo"

Yo you gonna come pick me up
Fo

Fo by MillerTimeee May 11, 2018

FO 

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

FO by 0reo123 May 21, 2018

fo 

fo means fuck off in chats.

Example:
1. I don't like you.

2. Fo

fo by Liorx April 30, 2018

FO 

Acronym for "Friendship over".

Janet: I hate you! You're the worst friend ever!
Florence: FO!

FO by duckduckhellno June 9, 2018

Fo 

mr petiti yells this whenever he means to say 4

Mr. Petiti yelled "FOOOOOOOO MINUTES!!!!!!!"

Fo by beepbeepp October 31, 2018

Fo 

Fuck off

-So, are you coming to my party tonight?
-Fo

Fo by Longwillz December 28, 2018