I went hiking today and the tread of my hiking boots is filled with dirt! I've brought two donuts to feed the slave - but he'll have to eat the dirt from my boot soles as well! I crush one donut first and then make the slave lick the donut/dirt mix off the soles. He struggles to get all of it out of the deep tread - so I smash my boots together until the dirt and crushed food falls off - just to make him eat it from the ground :-D Then I crush the second donut and again feed it to the slave - but this time I also spit on the crushed food a few times :-D