The examination had been in progress for nearly two hours now. I was starting to get seriously bored, and there was still an hour to go. My job as an exam invigilator was meant to be temporary. That was nearly 18 months ago, and I was still no closer to getting my dream job as a fireman.

I was sat at the side of the exam hall and my eyes scanned over the sea of students eagerly scribbling away. My attention was drawn to a brown haired girl who was sitting quite close to me. She was wearing a pencil skirt and a tight fitting shirt, which were showing off her ample breasts. As she leaned forward I had a delicious view of her cleavage, and could clearly see that she had a red bra on underneath. The voyeur in me loved being able to see something like this that I am not meant to.

My mind was starting to wander to what I had got up to last night. My wife is 5ft 3in, petite with firm perky tits and shoulder length brown hair. She is very submissive, and enjoys being teased, but last night I had been particularly cruel.

She likes being tied down and last night I tied her face down to the bed. Her arms and legs were spread apart and her head on the pillow.

After some foreplay I was in the mood for some spanking. I instructed her to arch her back and lift her ass into the air. If she was to have any chance of being allowed to orgasm she needed to take 10 slaps on her ass, without flinching. She would also need to count after each slap, but to keep my cock in her mouth at all times.

If she flinched, we would need to start again.

On the first occasion she got to six, but when I then feigned a slap she twitched slightly, so we needed to start again.

After three further failed attempts she was starting to breathe very heavily, gasping to take air in around my thick cock, and her backside was beginning to turn a very bright shade of pink. Finally on her fifth attempt she managed to get to ten, although by the last few slaps she was forced to moan in pain after each one.

I then moved back on to her pussy, leaning over her body to take a closer look, whilst still maintaining by cock in her mouth. It was very clear that she was extremely wet, and a glistening trail of pussy juice had run down her thigh and was making a wet patch on the bed.

I proceeded to bring her close to an orgasm on a couple of occasions. It was always very easy to tell when she was getting very close as I can feel her jaw tightening around my cock, and her breathing becomes more erratic. Each time I pulled away I would use both hands to hold her head in place, and I would drive my cock in and out of her mouth.