I was so engrossed with my fingers and the scene of the floor that I did not realise that Jenny had come upstairs to look for me until her hand came round my waist and grabbed my wrist where it was pushed down the waistband of my jeans. "Got you!" she cried, "I knew that you wouldn't be able to resist a little feel when you saw Sue and Tabby up to their tricks!"
The two girls on the mattress looked up when they heard her and far from stopping what they were doing, they went at it with even more vigour, looking at me caught frigging myself. At this I felt myself blushing furiously because although I had masturbated regularly from the age of 13 I had been lucky in never having been caught at it, not in the cinema, on the bus or at home.
