Sky had never been in a position like this, cuffed, and strapped to a bench, completely immobile, her bare arse on display. An arse that had just been pounded like she had never had before, she felt like she had been ripped in two. The pain was subsiding to discomfort now, and she could not believe that she missed that big fat cock in her. The fact that it was her sister's boyfriend and that he was blackmailing her into this should have made this the worst experience of her life, and to be fair she would have pretty much given anything to not have gone through it, but it had made her pussy wet, she wanted to cum, and she really wanted the spanking that was about to be delivered.
Rob un-cuffed her right hand, and she flexed her fingers trying to get blood moving. She moved it up to get to her clit, as she was being allowed to rub while taking her spanking. It was only 10 today, she had tried hard to keep it low, she had not expected to take the arse fuck as well as she had and really did not want to add to the pain too much, even if she normally enjoyed a spanking.
Her hand was a little squashed and she could not rub effectively, so she took a deep breath, and said to Rob, 'Please sir, will you release the waist strap a little, I can't rub.'
Rob said nothing, but released the strap, not a little, he completely removed it.
'Now young lady, how many was it, 20?' Rob enquired.
'I believe it was only 10, sir,' Sky replied.
From the clothes that he made her wear, Sky was convinced he wanted her to be the naughty school girl that was meek and compliant when caught and punished. Of all of this situation, she found this the easiest, she had role played that several times, and it actually excited her.
'I can't believe I was so lenient,' said Rob, 'but I am a man of my word.'
'Thank you, sir,' Sky replied, she could see his dick was growing again, it had gone soft after pumping its load into her arse only 2 or 3 minutes ago, but this exchange was clearly reversing that.
'Now I was thinking back to basics today, that you needed that personal touch, so it is my hand,' Rob instructed her.
'Thank you sir, I will enjoy that,' Sky said, and it was true, a week ago she never would have believed it would be true, but it was, and she never believed the next thing to come out of her mouth ever would either, but she continued, 'and if I did not completely satisfy sir, with by arse, then please use me however you want to ensure you are........ Satisfied.'
This stopped Rob in whatever it was he was doing, there was a pause, then he appeared in front of her again, and when he spoke he was very Rob, not this head teacher character that he was playing.
'You serious?' he asked.
She replied as confidently as she could, 'I do not want to be here doing any of this with you, although I think I might want to borrow some of this stuff with a boyfriend, but as I have no choice, you are forcing me to experience it, I might as well get the enjoyable part too.'
'The enjoyable part?' Rob looked genuinely confused.
Sky thought that she had just taken some of the enjoyment out of this for him, and a moment of panic crept into her mind.
'Look, the anal, I hated, I really never want that again, the tears were real, although it was not as bad as I had expected. But I like getting spanked and you are good at it, and yesterday I walked up stairs dying for a cock in me, and wanked loads before I came down again,' Sky blurted all of this, and paused before she continued.
'I actually missed the butt plug yesterday, it creates pressure when I push a dildo in and helps. What I am saying is, I will willingly submit to all of this, if you make it the full experience.'
Rob stood up, and spoke, back in the full head master, 'Young lady, I find your proposal acceptable, however, there are a couple of things, and firstly for not enjoying my big fat cock in your arse I am adding 5 to your count. Second, I will be replacing the butt plug when we are done, and the same rules apply, your bottom needs more training, it will be taking my cock again. Lastly, do not expect to enjoy every experience, I will withhold the part you enjoy as punishment sometimes. Is this all acceptable?'
'Yes, sir, I would prefer you didn't put it in my tight little bottom again though,' Sky didn't think that would work, but she was trying.
'Oh, No, young lady, it is most defiantly going in again, but I will reserve it for when you have been extra naughty, it will not pay your rent again,' with that Rob disappeared around behind her.
All through that exchange Sky had continued to rub herself, she meant what she said, she did not want any of this to be happening, and if anybody asked she was an unwilling participant, but while it was happening she would try to make it as pleasurable for herself as she could. Her thoughts were interrupted by Rob's hand stroking across her bottom, something close to a sensual massage.
Whack, his hand rose and came back down onto her right buttock hard. She had not even registered that he had moved his hand when the slap arrived, and she squeaked.
'I think you should count,' Rob said.
'One,' Sky said, in a voice that betrayed the shock of that first spank.