This masked slave wanted to lick his mistress's clean boots but she has something else in mind. She walks around outdoors in the mud then comes in and makes her slave lie down in the floor. She starts stepping on his face and making him lick the mud off her boots. She steps on his body getting mud all over his body as well. She will not be satisfied until he licks all the mud off.
Madame Marissa takes her slave out in a van for a bootlicking session in public. She has her sexy high heel, knee high boots on. He licks her boots up and down and licks all the dirt off the soles. Anyone who walks by can see him worshiping the feet of his mistress and polishing all the dirt off her high heel boots with his tongue. That's part of the humiliation.