Naked, spread, hands tied behind my back, and straddling a large dildo between my legs while I stand, bare foot, on small spinning base. Now that I've got my heels off, it's much easier to stand, yet more immobilizing with the dildo being shoved deeper inside me. Martin makes matters worse with an ass hook, then putting my hair into a tight pony tail, and attaching the two together. And when I say balancing was tough during the first 15 minutes, it's much more difficult now with my head pulled back!