http://en.wikipedia.org/wiki/Isopropyl_alcohol#Toxicology Gets you drunk, then metabolizes into acetone. Could be worse, but could be a fuckton better. If you want sketchy things to get wasted on, there's DVD coating higher alcohols, like butanol (I think that's one, anyways) that are between several and several dozen (or hundred) times more potent than ethanol. It works out to a beer's worth of drunk for like a half cent, according to some online math I've seen. But it's also unknown in the long run, and you must dose VERY carefully to not um.... die. But it's better than isopropanol, at least they actually get you drunk, instead of clean bongs. But iso does clean bongs pretty nicely. And make very simple hash.