After a walk round Her garden Lady Sara's boots are filthy and covered in mud, they need a good clean and that's what slaves are for. Mistress calls Her slave and tells him what She expects from him. He needs to clean off all the dirt from the soil of Her boots and eat it for Her.
He stars and gets absolutely filthy as he licks dirt off his Mistress's boots. After a while Mistress gets tired of waiting and uses him as Her door mat. Wiping Her boots off on his body leaving boot prints all over. Before squizinq his cock between Her boots and then leaving him there covered in filth until he is needed to serve again.