italian waterfall 

An Italian Waterfall is where the man takes a piss into the woman's ass, then she proceeds to "waterfall" into the mans mouth.

Guy 1: Dude, did you hear about Dave? His girlfriend gave him an Italian waterfall.
Guy 2: Grosss.

italian waterfall by Dickbuttmunch March 28, 2015

mathematical waterfall 

when a female collects her period blood and pours it down a math book into her partner's mouth

dude why is your mouth bleeding

its not its because I did a mathematical waterfall with my gf

mathematical waterfall by spotty quill January 22, 2021

Sub-Urban Waterfall 

The act of urinating inside a prolapsed anus.

Man I totally gave this chick a Sub-Urban Waterfall last night!

Sub-Urban Waterfall by Fandy188 February 14, 2012

canadian piledriver waterfall 

When a woman is being fucked in the piledriver position. The the man ejaculates and pools his cum in the crevice of her ass and pussy.
The man then allows the cums to drip down onto the face and mouth of the woman that is below. This is a Canadian piledriver waterfall.

My girlfriend was in a piledriver position when I came. So I dripped my cum all over her face giving her a canadian piledriver waterfall.

canadian piledriver waterfall by whtronin February 20, 2022

Blue Waterfall 

when u punch a girl in the vagina repeatedly who has a blue waffle and all the warts pop and u let the juices drip into your mouth

Ewwww sammi has a blue waffle so i asked if i could make a blue waterfall

Blue Waterfall by JPDBONE February 22, 2011

The Waterfall

A woman holds open her ass, and her partner pisses inside. After they're done, the woman stands over the partner and pisses in their mouth from her ass. Thus creating a waterfall.

"Yo man, me and muh girl just did the waterfall!"
"How did it taste?"
"Pretty spicy"

The Waterfall by P1ssMonkey March 5, 2020

Czechoslovakian Waterfall 

This is when a a guy takes shit inside a girl's asshole, has her shit it out, and then has her eat it.

Holy shit, we need to give that girl a Czechoslovakian waterfall!

Czechoslovakian Waterfall by czechoslovakianwaterfall555 June 12, 2013