When two men stand in front of each other, face to face, with their two erect penises almost touching. Their Jap's eyes are alligned so they are staring directly at each other. Once in the right position the men start masturbating their own penis until one of them ejaculates. The first one to ejaculate into the other ones Jap's eye wins the contest.
by lukebellend December 11, 2011

At the climax of a sexual encounter, the post-coital matter becomes airborne at an angle in which the recipient is caused to squint their eyes in anticipation. In that moment, the aforementioned distributor will, in an act of heroism, stretch the scrotal sack to cover the intended recipients' (then slanted) ocular cavities, thus creating Japanese Rain Goggles.
She finally accepted my relationship request on Facebook, solely due to my flawless execution of the Japanese Rain Goggles last night.
by 2 1/2 men, -the 1/2, + a girl November 28, 2010

by flogglywoggly November 28, 2010

When a girl is squirting in your face so you have to squint like a Japanese person, and wished you had a pair of goggles.
Two And A Half Men:
Charlie: Have you ever had a woman give you Japanese rain goggles?
Alan: I've never even heard of that
Charlie: Neither had I until last night, and now I don't know how i'd ever live without them
Charlie: Have you ever had a woman give you Japanese rain goggles?
Alan: I've never even heard of that
Charlie: Neither had I until last night, and now I don't know how i'd ever live without them
by Pista November 26, 2010

First referenced on the Steve Dahl/Gary Meier show on WLS in Chicago in the 1980s, it refers to one or more people bathing an individual using only their (human) tongues as the washing/cleansing agent. Hence the name.
"Pardon me, but I must be going; my manservant David has arrived to give me my weekly Japanese tongue bath."
by Reacharound McGillicuddy June 16, 2013

are when a man takes his nose and sticks it in a womans vagina while she sits on his face. She then proceeds to pee or ejaculate all over the mans face.
by jointfitter1968 November 26, 2010

