The Most Disgusting Slave Feeding Yet

I order the slave to get down on his knees on this unpaved parking lot - and then crush a cream-filled pastry in front of his eyes. My dirty boot feet crush his food into the mud and mixes with all the filth on the ground. Its just a abhorrent brown mud under my boot soles when I sit down and order him to lick them clean. This slave is determined to please me and tries to lick all the dirt out of the deep treat of the boots, pushing his tongue through every groove and licking the boot soles and heels all around! Unthinkable for a human to swallow this disgusting mess - but for the slave its just the right food!