Believe it or not, I found this on a Japanese YouTube site.  My apologies if it already made the rounds around here, but I've never seen it.  It's pure genius and it should be used as a teaching lesson by all coaches.

YouTube

A "live ball" is a "live ball".  Nothing changes that fact until the referee's whistle blows.  A couple of football teams learned this lesson with this trick play.  It put six on the board for one team, and probably ruined the others day.  Here's one for the books.