Bucky Sinister s a stand-up comedian and author of nine books, including Black Hole: A Novel and Get Up: A 12-Step Guide to Recovery for Misfits, Freaks and Weirdos.   He's told many stories at numerous shows—including one where he brought a now-deceased friend (in an urn) up on stage with him—but it's safe to say this is the most graphic tale he's told at a Light Hustler show.   Just how does a story about dating a mysterious woman with a mohawk get graphic? Let's just say it has to do with a tattoo of hers he discovered in an intimate moment.   Want to know what in God's name that means? You're going to have to listen.