It is the power that Master has over me that turns him on. He frequently articulates this to me. When I call him Master, refer to myself as this girl, his slut or most recently cum rabbit*, he tells me just how much is turns him on. And this is highly likely to transfer itself to his trousers. His cock will grow and harden, filling his pants and trousers. A direct result of the words spoken by us.
In turn, the knowledge that he has power over me and that this turns him on makes me aroused. A throbbing feeling within my cunt, the tell tale signs of dampness in my underwear. Because this power is, I think is at the centre of our dynamic. His power over me makes me want to show my submission to him. To kneel before him, to take his cock in my mouth, to feel his hands on my head. Sometimes this power, and the arousal that goes with it is sufficient to make me want to strip off my clothes and be naked before him. I know that he will want to touch the body he owns, to stroke my breasts and nipples or clitoris.
His power over me is demonstrated most through his ability to control my orgasms. By the fact that he can count down from 5 or 10 or more and on uttering 1 and then the word cum, I do. Finally I must thank him and reiterate that the orgasm belongs to him. The confirmation that his power over me is all consuming an infinite.
* Must have been having a moment when I wrote this yesterday, it should be cum puppy!