Fb 

Abbreviation for "fat bitch" can also be called: fc (fat cow)

Uhhh next lesson we have fb I hate her

Fb by SpechalBoy April 28, 2017

fb 

fuckboy

that fb always be flirting smh.

fb by sprousehart October 5, 2017

fb 

otherwise known as .."from behind"-- meaning to flip over from your back to your knees in order to assume the position of doggy style

*Note*- fb does not necessarily have to be anal. It can be just as hot when it turns into sexy motion in the ocean with the vagina instead

Ryan-"Wanna go fb?"
Kendra-"Oooh babe, you read my fuckin mind! Fuck yeah, Gil, flip me over babe."

fb by DRAmeAslice July 28, 2018

fb 

fuck buddy

hey so uh, are u like my fb?

fb by hanyways April 9, 2019

FB 

Means "FreeBase" as in nobody is home and you can have the house to yourselves

"yo i got a FB after class u wanna come?"

FB by fingerbanger123 April 24, 2019

fb 

A slang to call friends or anyone

“Wassup fb”
“Dat fb is a thot”

fb by mua.sandi July 7, 2019

fb 

free base.

Commonly used by teenagers, when someone’s parents aren’t home

“Hey, do you have a fb?”

fb by Sksks_vscogirl September 14, 2019