Adjective. For one to be 'cig-worthy', one is so good at sex, phone sex, etc, that whoever they're with (presumebly a smoker,) got it so good they have to go have a ciggarette afterwards, thus making you cig-worthy. (Not to be confused with sig-worthy.)
"Oh, god she was so good, totally cig-worthy!"
by Stephie the Non-Smoker November 14, 2005