The sexual of one man performing oral sex on another man while listening to the song Thunderstruck by ACDC. The man receiving the blow job yhen ejaculates on the other mans chin. This creates a waterfall effect.
Chuck and Mike love giving each other blow jobs. Their favorite activity is when they take part in a thunderstruck waterfall.
by Sneakerman June 2, 2018

When your partner is sitting on the toilet and you sit on their lap facing them. Then you urinate into their belly button while shitting through their legs, and the pee drips down into the toilet like a waterfall.
by Sketcherino November 5, 2021

by Boganville222 October 4, 2018

An innuendo regarding getting a woman wet.
Southern refers to how the vagina is down below (as South is down). Waterfall refers to how wet she gets.
Southern refers to how the vagina is down below (as South is down). Waterfall refers to how wet she gets.
by AgreeableRecord August 6, 2024

by Dave, General Manager of Ross October 28, 2020

A suave moniker for the bathroom, restroom, bog, loo, etc. Coined by wealthy industrialist, philanthropist, and, uh, bicyclist H. E. Pennypacker.
by Khronus August 6, 2024

It is a way of releasing toxins from your body via shitting such loose materials, known as diarrhea, at such a force it is like a waterfall
by Pickledicklerickle January 1, 2019
