Top Definition
Performance choreographed by a band, choir, or dance group to be done in a public setting with no prior warning to the bystanders. The goal is to get in, perform, and get out anonymously. Usually filmed and posted to the internet via You Tube.
Grab your camera- Nate's band is going to throw down a groove grenade in Time Square!
by Bloodngore July 12, 2011
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