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To flashout is to get highly upset with another person (this may lead to an altercation). Most commonly when you flashout on someone it is on a person that you detest.
girl A:(dancing in the club and bumps into girl B)
girl B: Bitch you better watch where you going!
girl A: No you watch where you going!
girl B: Mane, im finna flashout on this hoe!
by young thugs December 23, 2009
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Jan 24 Word of the Day
1. (noun) An abbreviation for stimulus check

2. (verb; stimmied) to get fucked by your government
Me and my homies are going to use our stimmys on guillotines and oreos. Too bad we can’t afford the milk
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by ecogoth January 01, 2021
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One minute you’re calm and the next minute your angry;a burst of anger out of nowhere; to go from 0 from 100 quickly; to quickly lose your cool; to lose your temper; Get angry;furious;mad;upset
Person 1 If you keep bothering I’m going to flash out on you homie
Person 2 Chill homie don’t flash out again

Person 1 Did you see Kobe flash out on tommy at lunch
Person 2 Yes bro, I didn’t think he could get so angry

Person 1 Kevin your mom is so damn hot
Person 2 (Kevin) Keep talking about my mom and I can guarantee you I will flash out on you bro.
Person 1 Chill bro it was only a joke

Person 1 Why you flashed out on your teacher
Person 2 He gave me homework
Person 1 You’re a savage bro
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by Ouu tweet August 09, 2019
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