The Osaka Bullet Train
The act of self-pleasure while on a bidet and immediately preceeding climax, one initiates the bidet to spray firmly on the rectum, thus creating a supergasm.
Guy 1: Have you ever been to Japan?
Guy 2: Yes, I experienced The Osaka Bullet Train for the first time there.
Guy 2: Yes, I experienced The Osaka Bullet Train for the first time there.