Whoosh Bottle

Do a search for these on YouTube and you'll find several more, but I thought this was the coolest looking one. 

DISCLAIMER:  DO NOT TRY THIS AT HOME.

Actually, go ahead if you want, I was just covering my ass.  If you DO try it at home, please record it and post it to YouTube, esp. if it blows up.

For some detailed instructions, view this video: Extreme Whoosh Bottle Trio

I'm thinking that if you're thinking of doing this, you might want to watch it to find out the proper and safest procedure.