a variation of the slang word "fo sho" it is meant to show that the person saying it is not ghetto, but wants to convey the same meaning of "fo sho." It is unique and people inevitably ask what it means, giving the speaker of the word a boost in self-esteem by getting the spotlight/recognition of ownership of the word, while expressing unique rhetoric style.
Kristina: Hey, would you like to go to the movies with me on saturday?
Jared: yeah, foSnow
Kristina: what the heck is"foSnow?"
Jared: It's like foShow with a twist.
Kristina: Oh, haha niiiice.