Elena and Julia came from a long walk and, accordingly, their boots were very dusty. Their slave girl christina faithfully waited for them in her corner with her head down. "What are you waiting for, whore? Can't you see that our boots are very dusty and dirty? Clean them with your tongue!" - Elena called the slave girl to her. Slave girl christina began to lick the dusty soles of the girls' boots and her tongue quickly turned black. "Ugh, what are you disgusting!" - Julia grimaced as christina polished her shoes from heel to toe. Then the girls ordered christina to take off their boots and watched as she licked them. The tops of the boots were also dusty and the slave girl had to clean that too. After the girls' boots began to shine with cleanliness, Elena allowed the slave girl to proceed to their feet. "Okay. Can you sniff my sweaty socks .. uh .. delicious?" - Elena continued to taunt christina. Then christina pushed them into her mouth and began to chew them, thereby sucking all the sweat from them. "You haven't forgotten about my socks, you idiot? They are no less sweaty, believe me! Haha" - Julia asked the slave girl. "Of course not, Mistress. Sorry me" - christina mumbled and began to worship Julia's socks. She also chewed them and sucked out all the sweat from them. Slave girl also shouldn't forget about the girls' feet because they sweated all day in these warm boots. christina begins to worship the girls' bare feet and thanks them for it. “Don't forget my soles! I can feel sweat on them” - tell her Julia. Girls humiliate christina morally while she throughly worship their feet.