When someone is dissed so bad to the point that to make them feel better is by humiliating them even more. This term is an NYC term to draw attention to the victim and in fact making the victim feel even worst than before. You must also yell the word cannon otherwise it won't be used in the correct sense.
Person B: Maybe she got better dick than you son
Person C: CANNON!!
Marrie: Yeah, but it's totally cannon.
Izzi: I know, I read the seventh book
Jen: OMG! McGee and Abby are such a cute couple.
Dan: And it's cannon, have you seen the latest NCIS episode?
Jen: I know, Abby totally kissed McGee's head!!
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.
2. (v.) To violently blast someone in hockey, possibly breaking their face with sheer awesomeness.
3. (adj.) The quality of awesomeness, all-being, and unstoppable power, drive and determination that will stop at nothing to win and destroy the enemy.