Todd Robbins, “The Coney Island Wonder Worker,” talks with Anne Strainchamps about how he learned how to safely swallow swords and walk on hot coals. And to prove his skill, he munches on a lightbulb while they chat. Robbins emphasizes that although his feats are not tricks, they do involve learned techniques and that no one should try this at home. Robbins is the Dean of Coney Island’s Sideshow School.