I once fucked my girlfriend's mother!!! - so let me tell you how it happened. I was about twenty at the time, and my girlfriend was 16 or 17. I used to go round her house some afternoons, and wait for her to come home from work.

This particular afternoon it was a very hot day, and I was only wearing a t-shirt and a pair of swimming trunks/shorts. As usual, her mother let me in, and made us both a cup of tea while we waited.

As we chatted, she made some comment about her daughter being quite shy and naïve, and she hoped that I would treat her right. Somehow this led on to her saying that she wanted to check what I had got, to make sure that I didn't hurt her daughter. Before I noticed, she had pulled down my shorts, revealing my cock! As she felt it, and it stood up to attention, she said she wanted to check my technique, so that she could advise her daughter.

She stood up, and took off her blouse and bra, and then lowered her skirt, and took off her panties! I was speechless. Then she lowered her c**t onto my erect cock, and started moving around. All I could think was: what would happen if my girlfriend came in, and saw her 40-year-old mother fucking her boyfriend.

As I remember, her tits were large and bouncy, and it wasn't long before I was cumming inside her! We both got dressed before her daughter got home, and neither of us ever mentioned it again. I wonder if she did advise her daughter on anything!