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
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
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
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
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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