Clean our filthy boots

Goddess Deanna and Mistress Jade Tiger have gotten their boots muddy while whipping and ballbusting their slaves and have assigned this slave the task of licking the mud and dirt from their boots with his tongue. His face is soon pitch black with mud and dirt, but that does not matter to these Mistresses, who insist he complete his task. Jade grabs and crushes his balls to make sure he finishes cleaning Deanna's boots.