No one knows exactly, but it involves a yoyo, 10 lbs. of chicken skins, a rubber glove, and that blue water from the barber shop.
No one should wander down a Frankie Rabbit Hole.
Sex Position
The man must install a pulley system operated by a third party. He is then lowered into the woman who is position and ready to receive him while in a handstand. During his decent, he must grab her ankles and bend her knees. While he is successfully in her, she must walk on both hands for the entire duration of intercourse.
I installed a pulley system in my ceiling so I could try Down The Rabbit Hole.