As a devout slave of mistress Svenja you will fulfill your task and lick the boots of your mistress clean. She will help you with it by providing the necessary wetness - she spits on the boots again and again. That's right - she spits on the dirty boots and you lick them clean. Dirt and saliva will mix perfectly and you'll swallow anything. Do you like the taste, slave? You can only hope so - because Svenja has a lot more spit to give you and her boots.