After I'd recovered from Jenny's training session she released my ankles from the bottom of the table legs and helped me to stand so she could take the cuffs off my wrists. Then she told me brusquely to dress. But before she let me leave she reminded me that I'd brought all this on myself and that she had recorded this session on video with the exception that her own face was nowhere to be seen while mine obviously was.
"I needn't tell you where copies of these videos, along with your confessions about masturbating in the library, might end up if you displease me." She pointed out in a soft, seductive voice. She gave me a pleasant smile as she continued "You won't be trying to back out of your agreement to accept your training and give me your obedience will you?" Despite the voice and the smile there was clear menace in her words. "I'm going to give up some of my free time and come in here on Sunday to do some catalogue work. As a special treat I'm going to let you come and help me pass my day more pleasantly. Tell whoever you need to that you'll be busy till late on Sunday. Now run along home like a good boy and I'll see you here at 10 am promptly."
How she could maintain such control over me while I could see my cum smearing her inner thighs and her stocking tops I did not understand. But never the less she had control and all I could do was mumble "Yes Mistress Jenny, thank you." and leave.
As I reached the outside door I heard her call sharply after me "No playing with that naughty cock till I see you next. I'll know if you do and you won't like the consequences one little bit."
Like any healthy 18 year old I was used to masturbating at least twice a day and as the hours passed between Thursday evening and Sunday morning it seemed to be a horribly long time since I'd had the normal 'release' I was used to. By Sunday 10 am I was waiting outside the staff door again feeling very jittery indeed. My balls were aching, they were so full of unspent cum and my cock had been semi-erect for 2 very, very, long days. I was also extremely apprehensive of what Jenny had planned for me. The last 2 sessions with her had been both painful and ultimately erotically satisfying even though only a couple of hours long. This time she had all day!!!!