As Thermodynamics is my favorite topic, I was paying my full attention to the topic. I didn’t notice what she was doing and after a while, she sudde...ly started to disturb me. I was a bit annoyed by it but she was trying to pull my book and notes back. So I caught her hand and tried to get my book back. And in between all this pull and push episode, she fell down on me!Just as when I fell down on my back on the bed, she made us of the opportunity and quickly kissed me on my lips. I didn’t. “Oh my, is that for me?” she said, almost purring with pleasure. “That’s going to feel so good when you slip it into my pussy.At that I leapt out of the bath, picked my mother up and carried her into her bedroomDisregarding the fact that we were both soaking wet, I threw her onto the bed and climbed on after her.“Not so fast young man,” she said pushing me away, “I don’t want to rush this and spoil it. Now then, sit here,” she said, indicating the edge of the bed. As soon as she was satisfied. I could see the footpath up ahead, just beyond the trees. I slipped in behind a tree on one occasion as a student went past on a bicycle. The doors of one or two cars slammed shut in the nearby carpark, as students headed for home. Finally, I made it to the path. I carefully hid behind the front tree, to ensure the coast was clear. The path was illuminated from the lights of the nearby carpark, so I would be fully exposed as soon as I stepped out. I heard footsteps and looked left, two women. He wouldn't tell anybody when he showed them that trick, but the image he conjured up was his older sister spread out on her bed and inviting him to come and mount her pale, ripe body.That had been three years ago, just before she went off to college. Since then he had mastered Kegel exercises and last summer, after the first almost accidental coupling with a full-grown woman, he had become a wandering stud with a lawnmower, servicing a score of grass widows and adding greatly to his secret.