Sometimes Superman gets really upset...and that's what happens on the 100 percent cotton Superman Exploding Symbol T-Shirt! Hey, Superman bumps his knee off end tables just like anybody else. The only different is that he could fly through the center of the Earth and destroy the world in return. I don't think you get that angry when you get a boo-boo, but I don't know you. Perhaps the Superman Exploding Symbol T-Shirt will get the point across?