Thc is a lipid and has a very low solublity, the reason you get "higher" when you smoke a bong or bubbler is because the water filtrates alot of the other chemicals out of the smoke. Ever notice how you tend to exhale alot less smoke when you smoke a bong? Your lungs can only absorb so much at one time, so when you smoke a pipe or bowl your lungs are essentially absorbing chemicals other than thc and you end up exhaling alot more thc than you would otherwise. :thumbsup: