Candy Caramelo, the hostess so nice she named herself twice (caramelo is Spanish for candy), zings one-liners and double-entendres from the stage of Club Tropigala Wednesday through Sunday nights. "This is not fat," she says, showing off her hefty figure, barely concealed by a teddy and feathery robe. "This is filet mignon." Then she winks and pulls some unsuspecting patron up to the stage, burying his face in her prodigious bosom to the delight of the crowd. Candy has been having fun with cabaret and nightclub audiences since the Fifties, and she doesn't mind telling you about her career in between jiggles, wiggles, and giggles. So sit back, order a mojito, and enjoy show biz the way it used to be. Just remember: Sit too close to the stage and there's a good chance you'll end up in Candy's, er, act.