Girth-Quake

When a mans flatulence moves forward instead of back or straight out the cheeks and causes his genitals to vibrate

"Man this leather seat just made me have a girth-quake"

by LolaBunnyyy August 21, 2018

Girth quake

When the bust is unbelievably strong, creating a anomaly that's too much to process.

Person 1:"Bro sam did a girth quake right infront of me yesterday"
Person 2: " fuck im sorry to hear that"

by Slidewayzz December 09, 2020