Mistress Natasha was interested in how her slave licked and so she used her sneakers to teach him how to do it. She came home with dirty sneakers and she then gave him instructions on what she wanted him to do and how she wanted him to do it.
Angry with her man, this mistress used her sneakers to teach him a lesson and make sure he understood how pissed she was. She felt that when she talked to him, he tended to ignore her words and feelings but when she used actions, he understood her better. So the mistress stomped on him with her sneakers and he learned what she wanted him to learn. It never happened again.