I'm on my way to solving this
I've contacted FM Concepts, and they're going to re-do the vid.
In order to insure that Dorothy remains on her back, she will be placed (face up) on a metal slab, then spot welded at the shoulders, hips and ankles. Also, the gentleman doing the tickling has graciously agreed to have his tongue surgically removed.
I will be posting the clip as soon as it is ready, until then, please feel free to hold your breath in anticipation.
😛 😛 😛 😛 😛 😛 😛 😛