"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?
Dad: Fo sho mo fo!
Kid (embarassed): Oh, I forgot I have homework.
Dad: Fo sho mo fo!
Kid (embarassed): Oh, I forgot I have homework.
by moehong August 15, 2010
Get the Fo Sho Mo Fomug. by Schmoozie May 23, 2006
Get the Fo sho mo fomug. short for Friendship Over.
by eight and ten August 10, 2010
Get the FOmug. by sdkjvaskdvjbaslicbsudb October 3, 2008
Get the Fomug. 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 movie Superbad, where he tells Jules that he will "for sure" buy alcohol for her party.
Known from the character Seth in the popular teen movie Superbad, where he tells Jules that he will "for sure" buy alcohol for her party.
by shannybanny March 21, 2008
Get the fo sho fo shomug. 
