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An idiotic term term that can be said at any given moment. Used to win any argument. Can be randomly screamed in public and no one will care.
Can be randomly chanted with friends to annoy another group of people.

Best of all, when someone asks you anything, it is customary to respond with "Finna Bet" in all 3 countries (United States of America, U.S.A., and America)
person 1: Hey honey, how was school today?
Person 2: Finna Bet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Person 1: ???????
**Person 2 walks away**

Situation 2:
12 year old: I can beat you in a race!!
Olympic runner: No you can't!
12 year old: FINNA BET BOIIIIIII
by LukePMichigan2003 December 06, 2017
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