Quote Originally Posted by Lord Thomas
And there is always, for those who can't do the breath play, try holding a switchblade to that pretty throat while you use it.
I would recommend a spyderco Endura or Delica trainer blade. The lock on those won't break and the blade isn't sharp and has no tip on it, but it works psychologically to a similar effect (especially since you can "flick" it out very easily).

If it doesn't quite feel sharp enough a common trick is to freeze it first.