Bong - Wikipedia, the free encyclopedia
That should get you started.
I can only imagine that blowing the exhaust directly through the water would cause some issues with back pressure that would have to be accounted for. Water is a whole lot more dense than air.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
