A sex position where the woman (or a transmasculine person before surgery) is on top of a man, penetrated by him, and at the same time both of them share a curve double dildo into their respective anus.

This way the woman receives double penetration and the man feels like in a 'sandwich'.
Sometimes a third person can help to fit and move the dildo inside both partners.

when you're hungover as shit after a spending a night drunk as a skunk