2.A tough mafucka or a hard rapper could be called a cannon too.
Bob: Nothin. What's good cannon ball?
Yo heard that verse Style P spit on "All I Know is Pain"? He kilt it, Styles a cannon
"Yeah, but let me hit this blunt first."
Mark takes a huge hit off the blunt, slams a shot of Tequilla, then exhales and pounds his chest. (In the background, the whole party is yelling CANNON BALL)