The Master watched every second, still blindly not believing the Doctor would hurt him. No, he just didn't believe it right up to the moment the tie constricted his neck. And then he panicked, eyes wide as he watched the Doctor react so casually, finding this whole dance a little too easy. He had a bypass, he knew that, he wouldn't choke to death for a good fifteen minutes to half an hour yet. But by Rassilon, it hurt.

Hell, if this was intended to kill him, it was worse that it would take longer, not better. The tighter it got, the more it felt like his windpipes were being crushed. Hoarsely making a strange strangled noise, he kicked his legs about to try and dislodge the Doctor.