Sam groaned as Shadow gripped his testicles, tears shooting out of his eyes as he moaned in pain.  "Please" he begged, his tear reddened eyes staring into the eyes of a predator.  "Why are you doing this to me?"  His voice was much weaker now, a hollow squeak compared to the loud screams he had managed earlier.  He wasn't going to stop talking, keep begging and screaming and trying to remind them that he was a human being, not just some plaything.  Sam found himself shivering against the cold metal table, the sudden heat brought to him by their play with his blood reminding him of how cold the chamber really was.  His nipple felt like it was on fire, hardening to the cold even as more of his sanguine humours leaked out.  "You don't have to do this  -what do you want from me?" he squeaked ineffectually in protest, nearly incoherent from the strange and terrible experiences already inflicted on him that day.