The biology teacher is a horny old loser pervert and he gets what he deserves from the school girls. They torture their teacher with the ball wrench and piss and shit into his open mouth like the little worm he is. After they are done they dig their heels on his body and degrade him further by spitting into his open mouth as he lies on the floor nude.
The old man slave gets totally humiliated and abused as sexy Chantal makes him her own personal toilet giving him a face full of shit and piss. He must open his mouth wide so he can take in all of her warm pee and shit just like a good slavce is supposed to. As an insult to injury she even steps on the slaves cock and balls with her high heels.