If you know anything about the Harbaugh name, you know that it bleeds pig-skin. Jack, the father, was a player and coach who brought up a pair of boys who went on to simultaneously coach in the NFL. First time; unheard of. Remember when John and Jim squared off at Superbowl XLVII?!? 49ers vs Ravens? Epic! Well, I bet you didn’t know that Jim just happens to be a rap star in the making…