Interesting - I've called half a dozen already this season. The most recent was earlier this week - boys game, just under 2 minutes left & visitors up by 8. Visitors are running motion offense with lots of outside passes to take time off the clock, home coach is yelling "foul him", so one of his players grabs opponent with the ball from behind. Mr. Fox sings & I call the X - home coach says rather excitedly "How can you call that intentional, we were just trying to stop the clock?" to which I replied "which by rule is an intentional foul".