Fastening Kel in place with very tight clamps on the skin of her forearms that will pull off if she moves, and beating her tits to try to make her move.
Trying first beating Kel, then pulling her away from the wall by sensitive bits, while she’s determined not to pull off the clamps holding her in place.
Jami getting a small and quiet orgasm, then whimpering when I don’t stop.
Endza tries to stay silent for a full minute of tickling, in order to earn the Hitachi.
Nina trying (unsuccessfully) not to raise up onto their toes every time the electricity peaks.
Paddling Amy Nicole in some sensitive places, occasionally using her inner labia to hold her in place.
Poking very sensitive bits of Emily with a sharp tool, then noting her reactions.
Rewarding Dolly for challenging tasks in ways that are particularly important to her: face punches and star stickers.