You don't even need a fancy electronic bidet. All civilization asks for is a water spray. Middle East, South East Asia and many parts of Europe has done this since goodness knows when. They cost like 10 bucks where they're common, and maybe another 20 for installation.
BUT WAIT! To preempt some burning questions:
I mean, duh? What do you do after you wash your hands? Exit the restroom doing a ballet while water flies off your wildly flailing appendages? I mean, really, wow, the population of three entire continents were all sitting around waiting for you to come to the conclusion that "yes, something is indeed wet after you wash it with water". We must all be very fortunate you thought to post the conclusion to this train of thought on GAF!
But this brings us to an interesting point about the United States. You guys put planes in the air, have a military force that the rest of the world fears, export movies and music to the rest of the world, but yet somehow all collectively feel that pushing shit around with toilet paper is somehow superior to simply washing with a controlled excess of liquid, then wiping dry - something that is the preferred method of treating any other part of the body in need of cleaning.