Top Definition
When you're at a pool with a bunch of people, someone might yell out "cannonball rally!" and everyone jumps off the diving board as fast as they can doing cannonballs a whole bunch until it's a sweet wavepool.
cannonball rally! let's get a wavepool going!
by JJJJJJJJJ December 31, 2005
4 Words related to cannonball rally

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