meaning that it is 'of the story' or something that could/did ACTUALLY happen in a story, used by fans and fanfictioners
Izzi: Gosh, Marrie, you really like the Harry and Ginny pairing for Harry Potter...
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!!
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!!
by Guy McCracken April 27, 2009
by Lbs. December 23, 2006
An artillery piece, or something of that nature. I'm only writing this because I'm perturbed that the top definition for "cannon" is a misspelling of "canon." Are people really that stupid? I believe the answer is yes.
by theamazingjmo June 02, 2016
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.
by sherLocke October 24, 2005
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.
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.
by K` October 16, 2005
"You only like that pairing because it's not cannon."
"No no, you mean CANON. Oh, and... That's not true."
"No no, you mean CANON. Oh, and... That's not true."
by Ravenwolf March 05, 2006
by Light Joker November 02, 2005