As you can imagine I was in complete turmoil as I left the library that night. I was terrified by the way Jenny had so easily blackmailed into agreeing to obey her, on the other hand I had never experienced anything as exciting and erotic as the 'punishment' she'd given me. One thing was certain I did not dare to disobey her instruction to be at the staff entrance promptly at 9.30pm on Thursday.
After a very uncomfortable evening studying with my friends at our usual table in the library 9.00 finally came round and it was time to leave. Outside we all said our good night and as my friends set off for home I hoped that nobody had noticed the massive throbbing erection I'd had all evening and how it had jerked and twitched in my pants every time I'd caught a glimpse of Jenny.
Just like Tuesday evening I waited on the car park behind the library until the other library staff had left and then made sure that I was standing outside the staff door well on time. My heart racing and I was trembling with nerves when the door opened precisely at 9.30pm.
Jenny stood in the doorway silhouetted by the light inside.
"Well at least you know how to be on time, we'll soon see if you are as obedient in other ways." she said "This evening we'll concentrate on improving your self-control and hopefully you won't behave badly enough to disgrace yourself or earn any serious punishment tonight." She moved slightly to one side and continued "Come inside, you know the way down to the archive, go and wait there for me. Oh yes! When I get there I'll expect you to be completely naked standing quietly opposite the door. Understood?"
If possible my stiff erection got even harder and felt like it was trying to burst out of my pants as I registered what she'd just said to me but all I could manage was to mutter nervously "Yes Jenny I understand." As I started down the stairs I heard the outside door being closed and locked.
Just as I was about to enter the archive I heard Jenny call down to me "If you know what's good for you, you will not touch that erection you've been nursing all evening without my express permission."
I opened the door and went into the archive. It was just as I remembered, dusty shelves of books disappearing in to the gloom and in the middle of the room a table and chairs the only lighting from single desk lamp on the table.
I stripped off my clothes as quickly as possible and stood facing the door with my head bowed. I was determined to show Jenny she had no reason to doubt my commitment to obey her. I knew I had to be here and that I did not dare to fail her but I also knew that I wanted to be here and I needed more of the training she'd introduced me to. Every time I thought about how she'd spanked my ass while my cock thrust into her hand last time I was in here my cock started to jerk in anticipation, even while I remembered how my ass had stung and burned.
When Jenny entered the room she was dressed as normal in her smart work clothes and she was carrying a leather sports bag which she placed on the table before sitting in one of the chairs and calmly looking me over.
When she eventually spoke to me it was with the surprising question "when you were wanking in the library you were thinking about me weren't you?"
"Yes Jenny, I was but I'm so sorry."
"Don't be sorry, it's quite normal for boys with low self-control to fantasize about women when they masturbate and play with their cocks. What did you imagine yourself doing with me while you were stroking your stiff throbbing cock and getting ready to shoot your cum all over the library? Remember the consequences if you don't tell me the truth."
"I was caressing your breasts and feeling your hard nipples then putting my hand on your pussy and slipping my fingers between your wet warm lips and kissing you while you enjoyed it." While I was being forced to tell her what I thought about while I jerked off, my cock could not help but respond jerking up and down with arousal.
"Come here and turn around." she instructed. As I turned my back to her she took something from her bag and guided my wrist behind me where suddenly felt a pair of cuffs click fast. "Turn round again," she said "at least we're now sure that you won't be able to play with your cock on your own." Of course that did not stop my cock from nodding and jerking. It was so exciting I thought I might cum just from being so helpless and naked right beside her. Just when I thought I could not feel more aroused she reached out her hand and gently took hold of my cock. She slowly slid her hand down the shaft of my cock pulling back the foreskin as she did so, all the time looking into my eyes. Then horribly slowly she began to stroke up and down the shaft pulling the foreskin all the way down on each stroke. My cock head was bulging and swollen the first few drips of pre-cum already wetting the lips of my cum-slit. I began to move my hips trying to increase the rhythm, immediately she withdrew her hand leaving my desperate cock thrusting into empty air.
"Oooooh Jenny ooh please...."
"Did anybody tell you that you could move?" she hissed at me "Don't you realize who is in control yet boy? Greedy boys never get what they want when a lady is in control."
"Please Jenny I'm sorry I won't be greedy again I promise but please don't stop."
This time she reached out with both hands one hand cupped my balls and gently caressed them. "Oh my goodness they are very full." she murmured. With the other hand she circled my cock head and pulled the foreskin slowly all the way back till it was taught with my glans fully exposed and engorged, straining with desire for touch. I tried to stay completely still even though my chest was heaving as I gasped for breath and my body quivered in complete physical need. Again she began to stoke slowly, oh so agonizingly slowly up and down my throbbing shaft. As she stoked she whispered "I'm wearing some of my sexiest lingerie under these dowdy work clothes," my cock jerked in her hand and she continued "if you like I'll show you."
"Oh god, yes pleeeease Jenny, yessss."
"Move back till your ass is against the table then." She said. I shuffled back a little, hoping she would not suddenly release my cock, till my ass touched the edge of the table. "Good boy, spread your legs, now hold still." The hand cupping my balls let go and again she reached into her bag, in a quick movement she let go of my cock knelt down and fastened one ankle after the other to the bottom of the table legs.
Now I was completely fixed in place, my hands cuffed behind me and my ankles shackled to the table legs. She stood and smiled at me "Just wait there a moment." she whispered into my ear, as if I had any choice.
She picked up her bag and walked past me to the other end of the room where she was invisible to me no matter how I twisted to try and see what she was doing. I could hear that she was still in the archive and I could hear the sound of zippers in the silence but I could see nothing.
