It is quite painful to have your head stood on especially when hard shoes are used, Sarah wears 3 pairs of hard platform shoes to stand full weight on the slaves skull she then wars 2 pairs of dominatrix fetish shoes, approx 15 minutes into the clip the part of Mark\’s head that kept being stood on started to feel a bit numb, when Sarah changes her shoes she sits on his back & flashes all of her white panties, towards the end of the clip Mark even tries to lift he but his head is totally pinned down. (Clip is 21:07)