Wash as in cash. Scottish comedy vernacular describing cunnilingus, with particular emphasis on the moisture caught and remaining on the face of the person administering the act.
When you take a very small smart car and the largest southern woman you can find and make her bend over, exposing her anal cavity, then drive the smart car at maximum speed into her anus.
I just bought a newsmart car, the first thing I did was a swaberdash.
a slabber dash is what happens when jamie farts. his buttcheeks ribble together making a noise that sounds exactly like a machine gun firing baked beans.
dude did you hear that?? i guess jamie just slabber dashed again.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.