Top Definition
An exciting event that occurs and thereafter causes a woman's vagina to instantaneously become wetter than a slaughter house floor.
1. Kim,"Jeez Debbie that guy is so sexy."

Debbie, "Yeea I just had a flash flood."

2. Fact: Kieth Richard's pelvis gyrations cause women to have flash floods.
by Brett schu June 04, 2010

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n.

An unplanned, usually unjustifiably long session of watching several videos on any Flash video site that recommends more videos, usually resulting in some variant of YouTuberculosis; analogous to an addictive video link surfing episode.
"I was just going to watch that one video, but then these other two videos looked funny, and before I knew it I was drowning in a Flash flood... and that's why I need an extension on the paper."
by usman noyo December 02, 2007

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The over excitement of a female in the moments before sex causing an excess of vaginal fluid.
Did you cause a flash flood before you hit that?
by dklee January 08, 2009

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A surprise facial given to a girl by one or more guys
She got one hell of a flashflood last night
by ausage October 18, 2010

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Sneak up on a person and jizz on their face and yell "FLASH FLOOD!!"
Mike snuck up on Suzan and yelled "FLASH FLOOD!!"
by Filthy Fetus Face August 11, 2008

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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