Top Definition
1. The act of riding a plasma scooter down steep hills being awesome and hardcore. Usually done with a group known as the plasma gang.

2. The act of being awesome or hardcore.

3. Act of being a Gnardogg no matter what age.
Dude, if the Bellarmine security catches us gnardoggin, we're all named Tim.
by Timtimtim...Ace August 18, 2010

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