Still, the reason a bong (with water) works is because THC is not water-soluble, that is, water won't take in THC when it comes in contact with it. Alcohol, on the other hand, will. That's how you make green dragon, after all; you leave some buds in alcohol for a while, sift out the plant matter and drink the alcohol which by then has absorbed all the THC. So unless you plan on drinking that nasty stuff after your session, you're wasting THC. Your best bet for flavoring the bong would probably be a fruity drink of some sort.