Bong: What Liquid?

[Cacophony]

Handling

Because of its particular characteristics, dry ice requires special precautions when handling. It is extremely cold and there should be no direct contact with skin (i.e. wear proper insulating gloves). It is constantly sublimating to carbon dioxide gas, so it cannot be stored in a sealed container as the pressure build-up will quickly cause the container to explode. The sublimated gas must be ventilated, otherwise it may fill the enclosed space and create a suffocation hazard. Special care for ventilating vehicles is needed as well due to the small space. People who handle dry ice should also be aware that carbon dioxide is heavier than air and will sink to the floor.

source:http://en.wikipedia.org/wiki/Dry_ice

When the bong exploads on someone trying to take a big hit or gives you frostbite, don't say I didn't warn ya.