An Appropriate Sandwich For A Slave

This slave brought along a sandwich for lunch and he really thought I would let him eat it just like this?! He should have known better! I take the sandwich and add a lot of spit - before I throw it into the dirt and crush it under the dirty soles of my boots! NOW its a proper slave sandwich! Obviously, the wet sandwich mixes with the dirt and its a completely disgusting mess - but I coerce him to eat it anyway. He has to eat every little bit from the boot soles and from the ground - hes not allowed to waste any food - especially not food that has been treated by me :-D.