Usually used in terms of someone or something being so fly they’d make yo nigga surrender.
"Follow Back"
Typically used by spambots in order to attain a quick following
"hey can u fb" -comment on a post about a tragic familial death
A text short form for free base
Jordan: Who’s got a fb tonight
Jack: Emily’s got a fb her parents are outta town
Fb meaning free base, is an abbreviation used to describe ones house as being free of all parents
Gay guy: Let’s drink cum at my place,
Straight guy: Nah come to mine I have a fb all night ;)