Pure hysteria - that's the only way to describe this clip! For most of this clip, I am tickling Mary non-stop on the most ticklish part of her body. She begs, whimpers, and gasps for air. She yanks on her cuffs hard enough to hurt herself, thrashes insanely, and eventually her knees just give out on her, but like the trooper she is, she never runs out of the energy needed to sustain the endless hysterical laughter that is pouring out of her mouth.