Showing ones semi-boner to females for a thrill.
Wow, look at those babes by the pool. I think I will walk by and flip out my half hard cock and watch their reaction.
by flashboy June 29, 2003
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To lose control and attack someone
Man,ease up homie, I will flash on yo ass!
by Mark August 11, 2004
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adj; showey. ostentatious.
Mo fo think he flash as a rat with a gold tooth.
by herbie August 25, 2004
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Pre-drawn designs for tattoos.
I was looking for flash of a shark.
by octopod February 18, 2004
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To immediately, uncontrollably projectile vomit when exposed to a scenario so revolting that one's innards rush for the proverbial Fire Exit, i.e one's mouth.
When he saw the Hamburger Lady: no arms, no legs, remaining torso and head with 4th degree burns, though a trained trauma physician, he flashed on the floor, sending vomit bouncing back up to the bed on which her moaning body lay.
by LiquidLiquid June 6, 2015
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When you go to a club, get drunk, and leave with a woman, not knowing she is hideous. You then return to her apartment, and you sober up before you are about to have sex. Though you realize she is unattractive, you still fuck her. You then proceed to bust your nut quickly, somewhere between five or ten minutes. Once you nut, you immediately pull out, grab your clothes, and bolt out of her house. Just as The Flash would do.
Dude 1: "Bro what happened to you last night? You left with some ugly chick."

Dude 2: "I know man. Lets just say i was The Flash last night. I got to her house at around 1:00 and was home at 1:09."
by DNKenij March 30, 2009
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1. to erupt in physical violence against another which is out of control and fierce.
2. to suddenly become outrageously profound and irate in an arguement which causes the other person to react in either submission or escalation.
3. an old game where a kid gets to slap the back of a hand of another kid who has accidentally just said a word that they didn't mean to say.
We were all just chill'n and then all of a sudden these girls got to flash'n at the bar.

2.Jimmy- "Hey Timmy, did you see that cock? (laughs)...I mean cop!"
Timmy- "Alright there Jimmy, let me get my flash" *slap*
by sancho82 January 4, 2009
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