I don't need to hear anything from you. No safeword needed. I am going to watch you closely and I'll spot any signs of distress or danger whilst I use and abuse you. You are mine and Sir looks after His property
True ownership includes the right to position you however I want for as long as I want. Fully exposed and immobilised is one of the clearest ways to demonstrate that. The body is controlled first so the mind has nowhere left to hide. You learn that decisions are no longer yours. They are mine, and you will follow them.