I'm sitting at the desk and use the slave's face to rest my boots on. The deep tread and hard heels hurt him, but I don't care - I'm totally distracted by looking for some new boots on the computer. I order him to lick the dirty soles of my boots and then use his face as a foot stool once again - ignoring him and his pain! In the end I order him to turn around and lick the rest of my boots. That's how I like it - I got my old boots cleaned properly and found some new boots in the meantime!