There is the answer for bass at 3am!
I have one no really!! I use propane and oxygen but same results at low power put more gas in and a boom that you can hear 5 miles away sounds like rolling thunder.
http://www.youtube.com/watch?v=f_s9NardpzI
You'll have to wait to the end.
Pretty funny -- they made an industrial-sized Airzooka.
Some of the young nerds at work shoot each other with these things when they need a break
http://www.thinkgeek.com/geektoys/warfare/60b6/?cpg=ab
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"The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence."