n. When you are in the car with an annoying girl who won't shut up and you slam on the brake to bounce her head off the dashboard, hence shutting her up. Coined by Russ Martin, the actual term is usually used in reference to giving somebody something (like a gift) and shouted.
"Jill and I got into an argument and she just wouldn't let things go, so I had to give her a lil DASH!"
"Honey, prepare to worship at the Temple of the DASH!"
"I'm thinking about taking you on a vacation dear... how would you like a one-way trip to Bangla-DASH!"