it stands for fuck it smile, a lifestyle created by Jay Anthony of the Diligentz, a Bay Area hip-hop group

"Well the abbreviation F.I.S can stand for multiple sayings such as; Fuck It Smile, Forget It Smile, Forever I'll Smile etc. The whole point of this brand new movement is to show people its okay to smile and its okay to be yourself.Life is way too short to trip off all this bullshit thats been going on, and i feel if you dont live by the rules of F.I.S life is going to be damn near too hard to accept.

MORAL: F.I.S..FUCK ALL THE BULLSHIT..DONT GIVE INTO IT..JUST SMILE AND MOVE ON...im not saying be a bitch, but some things just arent worth the trouble."-Jay-Ant

i'm livin that F.I.S. lifestyle, fuck all that bullshit, i'm just gonna make sure i'm happy.
by babybootieboo August 17, 2008
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Female Irrationality Syndrome. A condition found in 99% of women with the inability to rationally think through situations logically.
Man: "Hey honey what do you want for dinner?"
Women: "don't mind you pick"
Man: "ok, Chinese"
Women: "I don't want Chinese!"
Man: "what do you want then?"
Women: "I don't care"
Man: "God damn F.I.S!!!"
by Dr3v0m February 14, 2015
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