When you go to a cinema and decide instead of missing any part of the movie you hold in any toilet trips you may need to have.
by hotkeys132 July 5, 2009

Dude 1: Yo, why is there water on the floor?
Dude 2: Poseidon's Fountain struck again
Dude 1: Would you not clean it up?
Dude 2: Poseidon's Fountain struck again
Dude 1: Would you not clean it up?
by Badidasqitiman February 2, 2022

Three friends sitting in a row, two outer friends interlock fingers and stroke middle friends penis while pouring lube into top of interlocked fingers
Billy, Joe, and bob were arrested at the movie theatre the other night after they were caught red handed in the middle of a friendly fountain during the premiere of broke back mountain
by Timtimtimmy May 15, 2016

by Krkič October 28, 2019

What you make when you make ur girlfriend, wife, or other female sexual partner squirt in projectile fashion
by Joe the garza May 1, 2015

The extreme salivation that usually sets in as a precursor to vomiting. Normally occurs during an extreme night of drinking, such as after a harsh shot or one beer bong too many.
I'd had like 13 beers, and I was doin fine. Then, Joe brought me the shot of Jack. As soon as I downed it, the Fountain Mouth kicked in, and I knew I was done. Next stop; Puke City.
by MikeyMxCx August 14, 2009

by blacklodgebob February 4, 2016
