Mistress Tiffany had a new slave and she wanted the slave to learn to do things her way. And that is why the mistress chose to train him to lick her feet. She had muddy boots and she sat on a chair and lifted her leg for him to lick the mud off her boots. He had no choice but to do it and within no time, her boot was clean. He cooperated because he feared what she would do to him if he refused to lick the mud off her boots.