That's one of the many tough questions Robert Falcon asks over at modojo.com. He decided to analyze the DS and PSP's ability to survive various natural disasters, including floods, earthquakes, and blizzards. Keep in mind that if your DS Lite somehow manages to find its way into a pit of boiling lava, you need to take pictures so we can post them. Seriously, that stuff is blogging gold.
On a slightly more serious tack, has anyone had a DS or DS Lite miraculously survive when it had no right doing so? Let us know!