Around freshman year of college -- yes, college -- my roomate got an order of Omaha steaks. They were packed in dry ice. I took the dry ice; packed it in a two liter bottle; put in hot water; and, put the cap on. I stood there for about 10 seconds before I realized that a) there was no reason to think the force would be directed out the top like my weird cartoon original conception implied and b) it would take a lot of force to rip apart the two liter bottle.

Immediately, I threw the bottle into our bathroom tub and me and the friend that was there with me stood about 10 feet outside the door. After two or three minutes, I started feeling silly. Nothing was going to happen. About 10 seconds later, it blew up. The metal part faucet in the bathtub was bent, and the shockwave had enough force to knock me and my friend down (although, it could have just been fear) and I couldn't hear for about two hours.

This was around 2003. Not one person came by my dorm to investigate. I think if it was now, I would have been arrested. Admittedly, I was stupid, but not maliciously so.