Euphoria

Ok here is where I think its confusing everyone...

-Chop block is the one that is below the waist.

-Crackback Block is where you have a Defensive player going in one direction pursuant to the ball carrier and an offensive player is usually wide and lays that defender as if sealing the edge and the defender has no idea its coming. Its a way of protecting the defender... This was started back when Warren Sapp laid out a punter many years ago. They have been calling this penalty in a lot of games and its consistent with other games. I recall seeing one in a Giants game not that long ago.
you can hold him up and you can get in his way but you can't deck him because he is a defenseless player in a way.

E U P H O R I A