To ride a bike (usually on the road) at olympic blazing speeds without regard for human life, so fast that you think your legs and body will explode.
those hipster kid don't have jobs, all they do is smoke american spirits and mash on their fixies!
by mAgik bUS December 9, 2009
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The term used to describe riding in/with the traffic of a busy street very quickly on a bicycle. A verb that usually consists of many other verbs, such as riding, biking, cursing, yelling, swurving, giving the middle finger, speeding etc.
Lets MASH down Broadway, im in the mood to yell.
by Niglet12345 April 21, 2009
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1. n. mashed potatoes
2. v. to hit forcefully, smash
3. v. to extract maltose from grain in preparation for making beer
4. v. to engage in sexual foreplay or heavy petting (used on college campuses throughout the US)
1. Love that garlic mash!
2. I mashed my balls on the diving board when I slipped.
3. I prefer mashing to using malt extract when I make my homebrew.
4. After you left the party, I ended up mashing with that chick from my Chemistry class.
by Krazee Eyez Killa June 9, 2004
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To operate a vehicle recklessly at high speeds; to smash in a vehicle or on foot
Jump in the ride and mash out.

Hop in le ridezor and mash.
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a telivision show which ran from 1972-1983 about Surgeons at a korean war saving Casualties and there Adventures
Mash is the best show on T.V.
by Admir DeMondo December 24, 2003
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