Definitions by GfDew

Septictanking

Similar to motorboating: The placement of one's face, specifically the mouth, into the area between ass cheeks followed by a rapid shaking of the face in a side-to-side motion accompanied by yelling.

Joe found Brad Pitt so hot that he wanted nothing more than Brad sit on his face while septictanking the hell out of him him.

Septictanking by GfDew July 16, 2009