Ah, but there are bong, and there are BONGS.
A knowledge of physics is very handy in these situations...

The human lungs (average) only have a capacity of 2litres, therefore, anything bigger is just a waste.
Then you have to consider the amount of vacuum required to 'move' the air in an efficient way - ie, bong volume vs lung volume (it's no good having 1.5ltrs of bong air, becuase you'd only be able to get 0.5ltr into your lungs).
Then you must consider the filter system, the amount of cooling fluid (ie water), and the rigidity of the reciptacle (will it stand the atmospheres that you are exerting on it?).

Any one can make a bong, but some can make a BONG lol
RESiNATE Reviewed by RESiNATE on . vote!! splifs or bongs?? vote now!! ello evry 1 so wht do u think splifs or bongs??? Rating: 5