I walked a lot today and now I enjoy some rest sitting comfortably. The soles of my flip flops are very dirty but my four legged slave is ready to get them back as good as new. I order him to clean them and he executes, he doesn't know that he will soon have to clean my even dirtier feet. I order him to take off my shoes and move on to the filthy soles of my feet: he must wash them thoroughly and lick all the dirt off. He thinks he is finished, I check and I order him to be more careful: he must not leave anything out, especially my dirty heels.