A cig nig is a person who never buys a pack of cigarettes however said party will continuously bum cigarettes from friends and strangers during various social situations, particularly parties.
Jon: Hey dude, can I bum a smoke?
Frank: Yeah . . . that's straight, bro.
Jon: Thanks man.
Frank: Dude, FYI your a giant cig nig.
Jon: My b . . .