A Japanese device that was originally designed as a time machine, but the native people soon found use for as a loo. The general buttons are bidet, wash, soft wash and stop, but there is also usually a fifth "apocalypse" button usually disguised as the flush.

Modern shower toilets sometimes lack the critical time dial and warp button, however, people should know that switching the clock to the time corresponding correct year works as the time selecter, and then press bidet five times if you want to travel BCE or wash seven times for AD.
He probably is still in there because he can't work the shower toilet.
by ShowerToiletConnoisseur September 21, 2011
Get the shower toilet mug.