a long erect cock ready to bust a nut on an unsuspecting female at any given time
Ahhh! Suck my nut cannon you whore! Ahhh! I busted a nut in your fucking face! Suck it bitch!
The male reproductive organ (ie: the penis)
Larry went over to Joes house to return a barrow video game when Larry saw Joes fathers nut cannon.