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

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

The result of a person knowing everything about you, without you knowing anything about this person, probably because a friend of yours has told this person your whole life.
Jessica: "Hey George, I know you like furry porn with old ladies."
George: "HOW?! Is this the Fountain Effect? Not again!"
George: "HOW?! Is this the Fountain Effect? Not again!"
by Silience March 16, 2021

Action of when a women is about to climax ( preferably fountain, can be pee too ) Will stand up grabbing a handful of change, screaming "MAKE A WISH" while cuming on her partner and throwing change on him.
"Hey John, what's that knick in your face?"
"Ho, Mary decided to pull a Trevi fountain on me yesterday"
"Ho ...."
"Ho, Mary decided to pull a Trevi fountain on me yesterday"
"Ho ...."
by DrainDaBrain March 9, 2020

A fetish involving a couple that overeats and then lie down and rub their bellies together to the point where they throw up on each other which for some reason turns them on.
by roandri December 12, 2013

A classical machine that gives you water to drink, sometimes in public places like indoor amusement parks, schools, and or peoples work places.
by metalmagneticmaniac March 6, 2023

by vdw17 February 12, 2019
