Chocolate Or Mud Why Not Both

My riding boots are pretty dirty once again and I use my dirty boots to crush some chocolate for this slave. He has to lick everything under my boot soles. Is this brown stain mud? Or is it chocolate?! Thats what he has to find out with his tongue! :-D The cream filling makes the whole mess sticky and the slave struggles to get it off - but he has no chance - hell eat whatever I make him eat!