The Wheel of Discipline

In the NHL, it is not illegal to hit someone in the head in the Danger Zone.  On the other hand, it is illegal to insult someone's girlfriend (and, by extension, someone's mother, father, child), to mimic a BJ, have too much curve on your stick (before that rule, we were losing too many pucks to orbit), touch Sidney Crosby, play against Mike Gillis, be Chris Pronger, screen the goaltender in a way that looks too deliberate...