TD:

If you will excuse me, sir, I would much rather not show you an exploding prop, thank you.

I shouldn't think you'd want to have one explode either. Those spider webbing marks are sign of excessive flex, leading to a fatigue failure.

It's a lot cheaper to throw one away than to have some one hurt.

Using a questionable prop is a good example of "Penny wise and pound foolish."

Bill.