(n) an ancient art of self-defense and offense used by Italians for generations. Basically, it involves beating the shit out of someone. Then, if they are still coming at you, take out a baseball bat. If they are still coming at you, use a gun. That's it.
Italian karate is a joke, actually. Despite the stereotype, Italians are not all violent and crime-prone. They are hard-working, intelligent people. Viva Italia!!!