Those silly Japanese, always dunking their cellphones into toilets and hot tubs. Luckily for them, Sony Ericsson just released the SO902WP+, which is about the same as the SO902i, but waterproof. The only major difference is the camera, which is 1.3 megapixels instead of the original's 3.2. Bummer.
The phone can last up to 30 minutes at a depth of one meter. This means you can't go swimming with it, but if it accidentally slips into some water, you're still safe. As long you haven't just relieved yourself in that water, in that case, please wash your phone before using.