oil rig

when a person has their legs over their head naked, usually on the floor and the one on top plunges his penis into the others anus.

I'm about to oil rig that sweet ass.

oil rig

A euphimism for jail.

Person A: I spent 4 months on an oil rig. It was hard to keep in touch with everyone.
Person B: Was that the state oil rig or the federal oil rig?