1) When someone's breath is SO rancid, you can't help but utter, "Yer breath is KILLIN' me (smalls)!!" Hence the term: Breath Cancer. Breath that Kills. It's no joke!

2) OR, when yer friend has a "thinko" as she tries to say 'Breast Cancer', and really she says, 'Breath Cancer'. Then you erupt in laughter cause it's just THAT funny!
Oh my Gawd, did he just eat a clove of garlic? He has total Breath Cancer!!!
#breath #breast #cancer #thinko #killin' #smalls
by Lori LoLo Robb August 16, 2010
Top Definition
1) Chronic bad breath. Breath so foul; the stench of which is tantamount to that of a diseased, deceased, decaying carcass inside one's mouth.

2) Chronic bad breath from smoking cigarettes.
1) Don't let his pretty smile fool you; Larry actually has some of the worst breath cancer you'll ever encounter.

2) Five hours after his last cigarette, Larry's breath cancer finally began to wane.
#halitosis #bad breath #breath #hygiene #reek
by Caserdoodle September 20, 2007
1) Chronic bad breath. Breath so foul; the stench of which is tantamount to that of a diseased, deceased, decaying carcass inside one's mouth.

2) Chronic bad breath from smoking cigarettes.
1) Don't let his pretty smile fool you; Larry actually has some of the worst breath cancer you'll ever encounter.

2) Five hours after his last cigarette, Larry's breath cancer finally began to wane.
#halitosis #bad breath #breath #hygiene #reek
by Caserdoodle September 19, 2007
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