Gangster Paper

Alright, listen up, buttercup. The joke is playin' on words. It's askin' what kinda paper is a "gangster," but the answer is "rapping paper." See, "rapping" sounds like "wrapping," and rappers are often associated with a "gangster" lifestyle, even though you wouldn't know anything about that, I bet. Smart, huh? I know, your brain is probably fried now from all that thinkin'.