A musical instrument used in Tchaikovsky's 1812 Overture.

the art of remembering an arousing occurrence or some porn you watched while masturbating, often handy if you have no porn or your in the shower

meaning that it is 'of the story' or something that could/did ACTUALLY happen in a story, used by fans and fanfictioners

In Philadelphia this term is used to describe a violent or reckless person.

1. A blunt (see blunt, L, philly, dutch, etc.) that is large in diameter. A blunt containing 3 or more grams of marijuana can safely be considered a cannon.

An ambiguous object. Possibly:

a) a cigar because one end burns like the fuse on a cannon
b) a blunt (cigar filled with weed) because after you smoke it you're head is going to explode.
c) any form of firework
d) a penis, cause after you suck it, it explodes in your face
e) a person, because they could blow you to bits in some way (pwn you)
f) the muscles (usually arm) of a person, because cannons are just bigger guns
g) a firearm, preferablly the one you use to kill the person using this ambigous word in front of you. Don't use this word, people will have no clue what you're talking about.

Awesome and amazing guy. Always there for you... and will do anything he can to make you happy. Extremely good looking and a flirt. The perfect boyfriend and the guy that every girl goes to for comfort and advice. Cannons are usually the dreamy guy that every girl would kill to have... but they never admit it to his face. He is always the one you want to be snuggling with because he knows how to handle a girl.