Severe Slave Punishment

My friend and I decided to teach the slave boy a lesson, as he had behaved badly. To do this we used all the means we had at hand, pins, canning with a stick on the soles of his feet, needles, pinching his nipples, and nails, His cries of pain did not stop us continuing punishing the slave. Despite all our efforts we only provoked a great erection, which ended up in his orgasm.