dirty earthquake 

When you shamelessly let one rip so violently those in your vicinity can feel the vibration.

Damn! That must have been at least a 5.8 dirty earthquake on the Shichter scale.

dirty earthquake by The Tolkienator July 3, 2014

Dirty Earthquake 

Secret technique used to fuck bitches

"Hey you wanna do the dirty earthquake? " *Girl gets on top while guy shakes furiously under her like he's having a seizure*

Dirty Earthquake by BigNutTsunami May 28, 2019