A surprise facial given to a girl by one or more guys
She got one hell of a flashflood last night
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?
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
"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."
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.
Sneak up on a person and jizz on their face and yell "FLASH FLOOD!!"
Mike snuck up on Suzan and yelled "FLASH FLOOD!!"