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1.
To drive away quickly.

To Peel out and drive away.
Oh shit, 50, mash-out homie!
by Shando January 27, 2004

Words related to Mash-Out

50 homie peel out
 
2.
to paint graffiti, to go out on the town.
Yo we are going to mash out all weekend.
by xylena June 22, 2006