iH8DemLibz
When All Else Fails.
If you have another person, you can do this with a semi-auto too. I'd load 1 round, hand them the pistol, they'd shoot as I watched the muzzle, then I'd either load 1 round again, or feign to load a round without their knowledge, prep the pistol to make it appear loaded, and have them take another "shot". The first non-shot takes them by surprise and they can feel the anticipation as the move during the trigger pull.
Just don't use an XD9.
Those sneaky Croatians put a loaded chamber indicator on top of the slide.