A somewhat difficult sexual position that is pleasing for both partners. The girl (or guy, in a gay couple) lays on her back and folds her body in such a way that her feet are placed behind her head. For additional fun, she could also have her hands bound behind her back. Then, the guy penetrates either or both of her holes from the front.
My girlfriend is so flexible that she can do The Stretch when we fuck, it's amazing!