The moment hangs for an instant, because the Master is curious. He allowed this, because the Doctor initiated it, and because that was something new. Something to be explored.

But the Doctor isn't measuring up. He isn't taking. He's allowing the Master to interrupt the game at every move.

The Master pushes himself up on his arms and twists, pulling his legs out from under the Doctor and turning over, shoving a foot into the Doctor's chest and toppling him over the end of the bed.

He follows the Doctor over the end of the bed, onto the floor, pressing a hand down around the Doctor's throat. "Don't ask my permission."