It's unclear if Ella likes to have her slave on the shower floor licking her feet because it actually does result in cleaner feet, or if she does it because she loves to watch him struggle to lick while she is flooding his face with water from the shower head. Whatever the case may be it does look like Elle is enjoying herself while he desperately does his best to lick away that hard to remove dirt and grime from her soles. It certainly is tough to do with his mouth always filling up with water but he will diligently try while Ella looks down and smiles and his plight.