well, most of the practices listed above should be stoped because they are dumb. THC is alcohol soluable so your thc going through the vodka or listerine is being absorbed into your bong water and only after you have used it an ample number of times will it work well enough to consider it. and inhaleing vapors of all kinds of wierd chemicals that are in listerine or other drinks you might think are a good idea to use may be harmfull to your mouth throat and lungs. be smart, think a little.