Treating slave 0 like a rubber is is always fun for me. To show him his proper position I clamp a humbler on his balls him to crawl beneath me. I then drag him over to the boot cleaning chair where he can put his his doggy tongue to use cleaning my dirty boots. He is reluctant so I have to give him some slaps to the face and push him down until he finally makes my boots shiny. I watch closely as his tongue goes around my wonderful boots, as he takes the heel into his doggy mouth while the humbler pulls on his balls. He might be of some use after all.