Thanks the otaku on 2chan.net (Bing Translator)…
— What is Kamen Rider BLACK RX* doing in the toilet?
*Black RX is the evolved form of Kamen Rider Black and is the first Kamen Rider to switch into different forms—in this case the BioToilet Rider, the Super Prince of the Flaming Flocculent Fecal Plume (Wikipedia.org).
Previous 3Yen reports on Kaman Rider include:
• Dork Drinks…from Japan of course (3Yen / 2011-02-25)
• The traditional Nihon “Shocker” (3Yen / 2008-08-13)
• Being your own super hero (3Yen / 2006-04-12)