SHIP'S CANNON

When a guy wips his dick out of your pants & it's so short- it looks like a ships cannon.

Piss was all over the top of the urinal because the guy was handleing a ship's cannon.

by Detroit_Luie September 13, 2007

Heating up your ships main cannon

Masturbation,jerking off (usually males)

Child: *fapfapfap*
Mom:What are you doing I heard something?
Child:uhmmmmm nothing
Mom:Heating up your ships main cannon?
Child (silently:) FUCK

by BJC2002 February 19, 2012