There's a culture in Japan that likes to invent wacky things just to have an outlet for "out of the box thinking." Most of that stuff stays one-off as kind of a project or hobby.
I recall a list of that stuff, and the most memorable item was "6-Day Underpants." It had three leg holes, and each day you gave it a third of a turn, then on day 4 turned them inside out and repeated the process.
I recall a list of that stuff, and the most memorable item was "6-Day Underpants." It had three leg holes, and each day you gave it a third of a turn, then on day 4 turned them inside out and repeated the process.