when I first began poking smot, I would go to a friends place to hang out, and on this paticular day, my friend is cleaning his first bong. It's a double chamber, acrylic bong. Well he puts rubbing alcohol, sets it in a cabinet in his room. He wants to let the bong sit for a couple of minutes. Eventually he goes upstairs to check on it, and comes back downstairs and asked me if I remembered where he had placed the bong, and of course I'll tell him yea. And then he told me to go look where he had put it, so I run upstairs, open the cabinet and the acrylic bong had some how shattered. I've never seen that with a piece that's not glass.