The soles of my hiking shoes are pretty dirty and I want the slave to clean them with his tongue, but I know it's hard to get the dry dirt out of the deep tread - so I decide to make it a little bit easier - and a lot more humiliating - for him by covering the soles in my spit! At the beginning I'm still wearing the shoes while I spit on the and rub them all over the slave's tongue - but that's not very comfortable for me, so I decide to take them off and hold them in my hand. This way I can spit on them more easily and then rub them clean on his tongue. I also hold the shoes above his head while spitting on them - so all the spit that runs down the shoes hits his mouth and face! In the end both shoe soles are black and shiny again from heel to toes!