Stating that you are "for sure" going to do something. It is definate and without a doubt (that is why it is stated twice in a row).
Known from the character Seth in the popular teen movieSuperbad, where he tells Jules that he will "for sure" buy alcohol for her party.
"Yeah we're going to the partyfo sho fo sho. We're going to the party fo sho."
By Joni
Fo Sho Fo Sho
a girl (or guy i suppose) that is known for being easy. So easy, in fact, that you will "for sure" ("fo sho") be getting laid by them. Also known as a slut.
Dude, i'm so stokedto go out with Suzy tonight; she's a fo sho fo sho!
By Marya
Fo Sho Mo Fo
"For sure, motherfucker" - said as if you were drunk, and your mouth is full of marbles (or balls). Frequently used by old men to appear young.
Kid: Dad, you wanna go get a burger after the game?
Isnt the world a better place since ASHLEY made up the phrase fo-sho-mo-fo? Yeah she's so damn hot... DONT YOU WISH YOU KNEW HER? Oh yes. The answer is "FO-SHO-MO-FO!"