This guy has a massive pair!

Imagine even being in the same room as that thing when that happens. Nope. I'd rather just duck and cover then try and stop it if I wasn't prepared. Engines can be replaced. Limbs and vital organs on the other hand, not so much

[ame="http://www.youtube.com/watch?v=aUkXriHjQeI"]Engine Explosion dyno room - YouTube[/ame]