thc is soluable in oils and fats, and also in alcohol. i think the result would be thc-infused oil. keep in mind though there might be other chemicals in marijuana smoke that are soluable in oils--you might end up with some thc-infused oil, plus nasty tars in there... the basic idea behind a bong is that water (h20) filters out the tars and since THC is not soluable in water, you are left with a cleaner smoke--the end product is marijuana smoke minus the heavy tars and whatever else is soluable in h20. so in theory, you might be totally fucking up your smoking experience by using oil in your bong. you might be reversing the idea behind the water pipe. oil in the bong = bad idea. but i'm no chemist.