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1.
A Splash-N-Dash is when a person (usually male) goes to someone's house for a quick booty call & then leaves immediately after. A Splash-N-Dash usually occurs on a Sunday but can happen any day of the week.
Preston: "Hey Nate, you weren't gone for very long, must have been another splash-n-dash Sunday?"
by TrinityStar_07 February 24, 2010
 
2.
The act of using mouth rinse when running late instead of brushing, normally on your way out of the house, often just spitting the rinse into a potted plant or outside in the grass while entering your car.
Guy1: "Forgot to brush! My mouth feels like I've been licking Amy Winehouse."

Guy2: "Dude you're lucky you have a hotel size Scope in your hand."

Guy1: "I know right? Splash N' Dash. Cheers. "

(Guy1: *Splash N' Dashes*)
by J2 J2 January 13, 2010
 
3.
Another term for a quick sex session, commonly said by males.
Beatrice: "Oooh I'm feeling a bit horny, have we got time??!"

Jeffrey: "We'll have to be quick, just a splash'n'dash."
by Jefferz212 June 17, 2009
 
4.
A term used to discribe either

1. a shower that lasts less then a few minutes
2. having a piss really quickly
3. missing the toilet seat whilst having a piss then quickly running off
Brb just gunna have a splash n dash
by DJ SPYKERZ(SCOUSED OUT) May 25, 2011