Princess Serena found her slave licking utensils and storing them instead of washing them. She was pissed and made him lick the soles of her boots. She made him lick the dirt out of them. She also spat on them and he had to lick the spit from them as well. When she was done, she made him clean all the utensils and after that, she installed a CCTV camera in the kitchen to monitor how he cleaned stuff in the kitchen.