My leather riding boots are really dirty - and this pathetic slave will lick them clean! But I don't want to make it too easy for the loser - so I'll stand on his chest with one boot while he has to lick the sole of the other boot! Next, I push the whole front of my boot into his mouth, gagging him with it and getting it properly cleaned at the same time. Once he has cleaned the boots' soles and received a proper trampling, I sit down on the couch and he has to get on his knees in front of me - so he can lick off all the remaining dirt that's still on the boots' leather - and he won't be allowed to stop until they're completely clean and shiny again!