Back on September 13, the 3Yen was first to explain all about Japanese rain goggles…
Japanese Rain Goggles Mystery Spawned On Two and a Half Men
2010/11/23- Yahoo! News Japanese rain goggles is a team no one heard of until last night. That may be why Japanese rain goggles became a huge search item, after they were mentioned on Two and a Half Men. Given that they were mentioned by Charlie Sheen's sex-crazed character, in an episode where he hooked up with a crazy ex, everyone figured it was something dirty…more…

(3Yen | 2010/13/13)> Japanese rain goggles called “MEJIKARA” offer a, “nice tomorrow.” And if you are into the MEJIKARA Japanese rain googles, you also should look into…
Did Charlie Sheen Give Capri Anderson Japanese Rain Goggles?
TMR | Nov. 23, 2010
….At first blush Japanese Rain Goggles sound a lot like a Roman Helmet. Further investigation shows there may be some water play involved in the act...more...
I prefer the “Rei Line Expander”, don’t you?
Yes Masami, the “Rei Line Expander” might be fun,
especially if you model it for us. ;-)
A.I.D.S. obliges people to think of sex as having, possibly, the direst con-
sequences: Suicide. Or murder.
—Susan Sontag
Mo’ betta!

Japanese schoolgirl wears cooling eyeglasses to beat the lingering horror of summer heat
on the first day of school, September 3.
Alternative explanation…
Peepers keep goggles ready for golden showers
The Tokyo Reporter—
…a new shop named Oshikko Kansho Kurabu (The Pee Appreciation Club) opened for business in Tokyo’s Ikebukuro district.
Upon payment of 20,000 yen admission, reports Nikkan Gendai (July 25), male customers were treated to the sight of a female in her late teens or early 20s squatting above a Japanese-style washiki benjo and releasing a torrent of urine…Many of the customers went for options that included donning swimming goggles while the girls urinated on their face
…more…
Yet another iteration of Japanese Rain Goggles—This time by Canon Corporation…

..
Japan’s hi-tech wundercompany Canon unveils ‘Mr Goggles’
news.3yen.com / 2013-06-20
Read more…