A sexual maneuver during which two women stand naked, side by side. A third person sits on the floor at the feet of the two women, facing the same direction as the them. This person extends his arms out and slightly up, with two fingers in each of the two girls' vaginas. This looks very similar to the "peace" sign Richard Nixon did upon boarding a plane in a that famous video clip.
"Well, we went skinny dipping, and after Amy and Cassie were standing beside the pool getting ready to dry off, I sat down and gave them a Richard Nixon! They loved it."