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1.
1. When you have sexual relations in a car. Typically in the front seat and usually with the female pinned against the Dash Board of the Car.

2. A type of girl that likes to have quickies in a car with random guys.
1. Guy: "I go to Martigras for all the dash board ass!"

2. Dude:" I just nailed some chick in the front seat of my yellow Honda Civic and I didn't even know who she was."
Dude2:" Thats some good Dash Board ass."

3. Dan: I hope I get some Dash Board ass during spring break and I hope the chick is in the Prostate Investigating as much as I am.
by Pectabyte June 06, 2005