Jim Croce put it very well when he was covering things that one just should not do. According to Mr. Croce, you don't tug on Superman's cape, you don't spit in the wind, you don't pull the mask off the old Lone Ranger, and of course, you don't mess around with Jim (later Slim)...
If you answered "gas fire," ding-ding-ding, you're the winner! The non-winner of this question is the guy in Center Line, Michigan, who, upon finding a spider in the gas door of his car, decided to set the spider on fire with his lighter. Problem was, he was pumping gas at the exact same time...