A potato cannon is a form of Cannon that involves utilizing the Potato Beetle Potato Gun ability in order to shoot a ball with high speed at another ball.

The momentum from the shot ball transfers into the larger ball in the air to make it move at a fast speed.

Shooting too much dung at a gold ball will make it explode (as utilized in Dung Defense.) Something you can do is have a 4 ball which is 1 tick below gold in the air and then shoot a ball into it. This would then merge into a gold in the air but gets the momentum of the cannon without any risk of it breaking.

A potato cannon is typically set up by throwing a large ball in the air and then immediately holding down q to charge up a shot (while you have dung inside of you). Once the charge effect appears q is released to power shoot a ball into the ball that was thrown earlier.

A Potato Grab can be performed before a potato cannon in order to perform a cannon without any initial stored dung inside of you. The potato grab eats one chunk of the dung but gives you back control of the larger ball in order to throw and then power shoot at.