If you have six thousand dollars to spend, there are a lot of things that you can do with it. You could buy a used car. You could furnish your living room. You could even buy six thousand Taco Bell bean burritos. Or you could go for the ultimate in luxury for your rear end and buy the $6,390 Numi from Kohler, which features handsfree operation, a built-in bidet, and speakers for your MP3 player.