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1.
What somebody has when they forget about ashing their cigarette and it is abnormally shlong.
Dude, look at Jonny's cigarette boner. That stoner better not ash on my couch again.
by Bonerheros August 22, 2010
 
2.
When you bump your cigarette into something but don't quite lose the cherry, it turns up wards and forms a "cigarette boner" that continues to curl upwards
"Fuck I bumped my cigarette....it's ok I just got a cigarette boner now."
by ayfoxtron September 22, 2008