The act of ejaculating in unison with a minimum of 2 male partners to create an artistic aerodesign.
by MushroomSoup October 7, 2010

Jimmy was masturbating vigorously the other day and gave himself a Japanese Fountain. Dude now has a new fetish.
by Dinrael May 17, 2015

by vdw17 February 12, 2019

A woman who squirts or urinates during her period. A man who has a bloody fountain should go see his Doctor right away.
by Dlee1967 December 20, 2014

When two lovers, a man and woman, urinate in the same toilet.
A women peeing sitting down and the man pees between her legs at the same time.
A women peeing sitting down and the man pees between her legs at the same time.
“We both had to piss so bad at the same time, so we decided to go Trevi Fountain and get back to bed.”
by Clyde The Dog December 21, 2021

by James Gresham October 27, 2023

When you shove a bath bomb in one’s ass and jizz inside, activating the bomb and causing it fizz out of one’s ass
Dude we had a spare bath bomb laying around so we got a little wet and wild and made a soapy fountain last night
by Mrdusty1323 June 5, 2022
