backseat booty 

To have sex in the rear of a car.

Wonda Wonderpig was was doing the backseat booty.

backseat booty by I, Wreckerrr November 16, 2016

Backstair boogy 

When you and your mate are to lazy and or to drunk to make it to the bedroom you bust into the backstair boogy.

This girl I took home from the bar last night was to drunk so I hit her with the backstair boogy. She loved it

Backstair boogy by Action danson November 27, 2018