The word Jizz is used to refer to ones sexy spray which is emmited from the end of ones falice (the cum shot shooting out your dong). The word canon here refers to ones falice, penis, nob, dick, cock, dong, pencil, pink flute, weapon of mass destruction (in some cases destraction) and so on, let us not be distracted by theses many words used to refer to ones meat as it where. Henceforth Jizz Canon is a term used to describe the frightfully large male genetalia, of which i myself own, this object is so large that when it emmits its Jizz it fires it with such high pressure through the japs eye, much like a supersoker, that the jizz may actually cause damage to a person or object, the act is viewed as something of a display of male dominance and is also refered to as a sexy explosion.
"Reauri did you hear with your ears how during my sanhurst days i was fast tracked to the rank of brigadier for my impressively immense genitalia, i was then sent to the disagreement in Iraq and my penis was actually used as a canon to blast Iraqi insurgents out of there hiding places, it was called a supersoaker, i tell you i do that this here bell caused the death of Osama Bin Ladin, i stuck him down and your Sergent Wayne King over there dribbled on him apparently it was like napalm"
"Tremendous Sir i have highest gratitude and respect for you and your third leg, i hearby announce that you posses a Jizz Canon"