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1.
A term used when a man gets his dick sucked shortly after the sucker has smoked a ciggarette.
Making out with a smoker sucks, but getting cancer dick from one isnt so bad.
by Zippie January 02, 2006
 
2.
n://Cigarette. As derived from the reference "cancer stick" used to describe the stick-shaped cigarette's propensity to cause cancer, the term "cancer dick" is intended to additionally imply how smoking fucks you over.
Still smoking those cancer dicks, Earl?
by redgyul December 31, 2005
 
3.
a penis that looks like it is on the verge of death
Tommy made the observation that Saroo had a cancer dick during a recent trip to Chicago.
by Tommy Strange January 01, 2011