Jim Tunney, the dean of National Football League referees, wrote a blog recently that caught my eye. He mentioned how when an NFL defensive player intercepts a pass, most of the defensive unit on the field runs to an end zone for a photo op. These players and many others feel the defensive unit is just taking pride in making a big play. However, a fan wrote to Tunney, describing such tactics as showmanship and unnecessary. Then he asked how he should explain to his teenage son what pride is and how to define it.