This guy was extremely thirsty when mistress Zephy found him. She did not have any water to help him quench his thirst. So she had to think fast and help him. She did this by making him drink her urine. It was the only liquid she could give him and she did not hesitate to do so. He drank it hungrily as he had no alternative. He even ate her pussy as thank you.
Mistress Zephy was deeply hurt by her friend because her friend had betrayed her. Her friend realized what she had done and begged the mistress for mercy but she did not want to give it. Instead, she turned her friend into a pee slave and she fed her pee. The friend had to drink all of it before the mistress felt that it was enough and she let her go.