Slave Coerced To Gobble Extremely Dirty Shoes

After a few long runs my trailrunning footwear collected a lot of the mud - and the slave will now be coerced to clean them with his tongue! I sit down on the cupboard and order him to begin gobbling the repugnant mess from the shoe feet. With the dry mess its quite hard for him to get it all out of the tread - but then hell simply have to lick them longer! His tongue is getting dirty and hes close to puking - but I dont care and just humiliate him even more! Lets see how clean hell get them! And if he doesnt clean them to my satisfaction, Ill use his stupid face as a doormat - and he surely doesnt want this to happen with these shoes!