I'm not sure if this fits in but it seemed close to it so here it goes. I have a bdsm friend who is a hermaphrodite (let's call him Liam). My friend had a master for three years who he absolutely adored (in the beginning) even though the master beat the shit out of him. One time the master aroused Liam and then placed a cock ring on him. Liam was then tied to a chair and was forced to watch a woman pleasure his master. He told me that it nearly broke him because he was not the one pleasuring his master. He begged and pleaded but the master ignored him. Liam told me it was one of the worst punishments that he ever endured.