I've previously deliberated on the "smash" concept at length; it's one of the best passing plays, a staple of every modern passing game, and was in many ways one of the transition concepts from the dark ages to today's sophisticated passing attacks. The basic concept is a simple one: an outside receiver runs to about five yards and basically turns around, while an inside receiver runs to about ten yards and breaks for the corner. The idea is for the outside receiver to hold the cornerback shallow while the corner route breaks open behind him. See the diagram below.
I had long remembered this play, but I was delighted when I saw that Every Day Should Be Saturday tracked down the famous use of the "smash" concept by Auburn (then coached by Terry Bowden) to beat Florida. The video below is self-explanatory; the smash concept could not be demonstrated more clearly.