Curtain Pullback
When the labia is so meaty and dangly that those meat curtains are grasped, one in each hand, and stretched and pulled to the left and right like a set of stage curtains opening the stage for sexual play. The opening act is typically a spirited round of cunnilingus.
Rachel did the old curtain pullback for me last night so I buried my face and nose all up in there for an hour.