This mistress likes to strike fear into her slaves so that they fear her and fear pissing her. That way, she has an easy time with them and does not have to worry about them doing what she wants or what she asks them to do. Today she did the same to her new slave by making him lick the soles of her high heels while he was naked and whipped him too.
Mistress Katja sees that her professor is looking at her long lean legs and sexy black boots. She finds him in the hallway and asks him if he wants to become her shoe worship slave. He of course agrees and they find a place in his classroom to lick the bottom of her boots until they are completely clean of dirt. She definitely is getting an A.