Smoking Mistress Sits on Slave

I was driving home when suddenly heard some noise in my boot! Hmm, seemed my slave was about to tell me something. I stopped the car and it appeared he just wanted to piss! What a fool! But anyway, we’ve already stopped so I decided to have a short smoko. I made my stupid worm stay on all fours like a chair and set my ass comfortable on that broad back smoking, throwing ash on boy’s body and not allowing him to pee! Guess, how long he did bear it?!