Thong Whistle

The undergarment equivalent of placing a blade of grass in between the palms of your hands ,then blowing and creating a whistling sound. The Back of the thong is nestled directly between the butt cheeks, once air pressure is applied in the form of a fart, the thong reverberates and creates a low whistling sound.

Damn, that girl with the big booty busted out a thong whistle that sounded like a barge coming to shore....

Valley thong whistle

Is when a person who is rude and disgusting and refer to her massive stinky clit as a hunny pot wears a thong and farts out her jumbo cunt it makes a whistle sound like blow g on a blade of grass your holding

I seen this old gross blond lady working out doing squat thrusters that her beaver was doing the valley thong whistle every thrust.