Mistress Cathy is done dealing with her worthless slave's bullshit. She forces him to lick every inch of dirt off of her dirty heels. He starts his task but then abruptly stops before the job is done and refuses to finish. Mistress Cathy won't tolerate this kind of disobedience. She shoves his little face right into her smelly armpit. When she thinks he's had enough she uses him as a footstool.
Cathy's boots are really dirt after a long day and night of shopping and partying. She can't stand the sight of dirty white boots she has her slaves do something about it. She has that pathetic loser clean those white boots. He can't stop until every inch of those boots are clean. His only tool to clean those boots is his tongue. He better do a good job too.