well, it's pretty much a lung, but instead of a bag, it uses water falling through a hole. it's the same principle. the water falling creates suction through the mouthpiece of the bottle, where the bowl is. and that pullls smoke into the bottle, and once the bottle is drained of water, you have a water/gatorade/milk/etc bottle filled with smoke!

gets you bakedddd :S5: :woohoo: :joint1: