When Sadie and Elle were talking about doing some carving, I don't think this is what the slave had in mind. Because now he finds himself on the floor in front of them as they scrape their heels into his back. It seems to amuse the girls though, and in spite of the slaves pain they have fun marking up their personal canvas of skin repeatedly with their heels. It hurts the slave quite a bit but eventually the marks on his back should mostly heal, which will allow the girls to create some fresh art once again with their high heels in the future.