Mistress Tatjana needs to pee. He doesn't have time to use a real toilet, so he uses his servant's mouth. The slave lies under him with a large funnel and swallows everything nicely...
Mistress Dyanna feels she really needs to go to the bathroom and pees in the slave's mouth. He likes it very much, he even starts smoking while using the toilet. Ashes and cigarette butts must also be digested by the slave.
Mistress Nomi really needs to pee and wants to play. That's why he uses a special toilet with a slave's face underneath. The slave must stay there until the mistress is relieved.