When someone gets drunk and throws up on a bar/restaurant table. In order to have successfully pulled off a four-sided waterfall, the person must have consumed such a large volume of alcohol that the liquid pours down all four sides of the table uninterrupted as if cascading from their mouth to the table, and finally down to the floor.

Friend 1: Hey guys! Check it out! Jon is throwing up on the table!
Friend 2: Dude, how much did he drink? It's totally spilling off the sides.
Friend 1: Looks like he made the Ole' Four-Sided Waterfall....

Four-Sided Waterfall by Admiral_Snackbar1 September 30, 2011

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Beaver Waterfall

A beaver waterfall is when a woman lies down in the bathtub, places both legs on the wall, places her vagina underneath the faucet, and uses running water to masterbate.

Sheila was feeling very lonely after watching "Murder, She Wrote" so she decided it was time for a beaver waterfall.

Beaver Waterfall by Michael_Scarn June 8, 2015

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Westmont Waterfall

When an intoxicated fun loving and amazingly hilarious guy asks a slightly intoxicated, fun loving, naked woman to bend over while he, who won't let go of his college fraternity days, takes puff from pencil joint, then pours ice cold beer down her ass crack into his welcoming mouth, holds the hit for so long that the small vein on his temple bulges out, and then he blows the hit out. The sequence may be wrapped up with a tongue dart.

Hey Mandy, we’re going to get high this evening and do the Westmont Waterfall.

Westmont Waterfall by IR811 June 12, 2021

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