What a special treat for you losers out there today. I want you to lick these boots so clean that they shine once you are done. I know you will do this because you have only been dreaming about it forever. Here is your chance to impress me. If you are good I will allow you to wank your sorry cock off to these boots while I laugh at how small it is.
Lisa has just gotten home from a hard day and her shoes are very dirty, plus her feet are very sweaty. Luckily, she has a slave to clean them for her. She gets him down on the floor and makes him lick every single speck of dirt from her shoes. Once he's done with that, she makes him lick the sweat from her nylons and swallow every last drop down.
Bad luck for the new slave. He only wanted to lick only clean boots. Unfortunately I had to go out to the horses because somebody scared them and I had to soothe them. If my boots are dirty, they're probably covered in shit as well as mud. Ah, well, it's not like he has any choice in the matter. He cleans every last bit of them with his tongue and swallows it all.
This mistress knew that this guy had a crush on her. She had always wanted to try foot femdom and she now had a chance. She knew that whatever it is she asked him to do, he would. So she told him that if she licked the soles of her heels, it would turn him on. And the guy dutifully did while the mistress pretended she was getting turned on by what he did.