Time to step up the frustration for my slave and maybe just maybe let his tongue get a little action on my boots. As a treat I let him rest his head on my bottom, what a comfy cushion that makes, but with those high heels tantalisingly close he's driven to despair. This slave needs more training so I sit on his face and let him breath in the very essence of his Mistress just to make sure he's in no doubt who's in charge.