Milky Waterfall

When you are about to cum, you pinch your foreskin and hold it, and and then let go when you done cuming, it should just pour out.

when you look at a girl and milky waterfall on her face

Milky Waterfall by jeessis12312312 June 13, 2011

undercover waterfall 

The act of urinating on your partner while they are asleep.

While Todd was sleeping in the dead of the night, matt snuck in and gave him an undercover waterfall.

undercover waterfall by Gman692 April 2, 2017

molasses waterfall 

A buzzword agile methodology training sold to companies by process consultants as training that won't actually make you any more efficient. Waterfall development being in opposition to agile development.

We hired some consultants to teach us how to synergize and go to market with hockey stick growth, but they just sold us a molasses waterfall and now I'm laid off.

molasses waterfall by boi_squeeze April 21, 2017

Belgian waterfall 

Chundering up large amounts of Stella Artois (a Belgian beer), to give the impression of a waterfall

"Ahhhhh mate, Jake has had way too much Stella, look at that Belgian Waterfall

Belgian waterfall by jakestar99 June 3, 2017

Egyptian Waterfall

The egyptian waterfall is a sex act/prank/home defense system where a man ejaculates down a flight of stairs. This causes the semen to slowly cascade down the steps like it were a waterfall.

Tom: Hey some guy pulled an egyptian waterfall at the frat house last night. It made the stairs all slippery!

Egyptian Waterfall by Tomathy Walkens May 30, 2018

Diamond waterfall 

When you piss on a girl's face or mouth and your piss is clear

Shit got so freaky last night I gave her a diamond waterfall and soaked the bed. She looked like a thousand dollars after that.

Diamond waterfall by Yosuke8-bit June 21, 2021

Midwest Waterfall 

When a mentally ill man who is in a hospital/psych ward, urinates all over a nurse who is attempting to help him.
Primarily attempted and seen within the Midwest region of the United States of America.

We got a code 205, a patient is attempting a Midwest Waterfall in the ER. Security backup required.

Midwest Waterfall by Ed Flesh January 23, 2022