Top Definition
1) When a person jumps into the water from a high height to produce a large splash.

2) An Atari game long out of commission.

3) When someone wears too little clothing into a public shopping area, while also being obscenely obese.
Dude! See that chick? What a Human Cannonball!

Eew, do you see the human cannonball on aisle 3?
by Oakstaff January 09, 2012

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