What really turns me on is a pair of lovely shaped legs and Mary is a photographer’s leg model.

This particular evening she was wearing black nylon stockings and black patent high-heeled court shoes. She was sitting opposite me in an armchair so I got a lovely view of her legs. Suddenly she said we couldn’t have sex that night as it was the wrong time of the month.

My penis was nearly bursting through my trousers and, seeing this, Mary stretched out her leg, pressed the toe of her shoe on my bulging penis and I felt a strange sort of thrill.

I leaned forward and began kissing her legs and holding her ankle so that her foot kept pressing against my penis, then I told her to move her foot about gently. In a few seconds I experienced a most unusual thrill and ejaculated into my trousers.