Although this happened in 2005, it's about my son, whom I witnessed without his knowledge, doing something I didn't know he was capable of at the time. I was 28 years old, married, my son was just turned 11, and quite small for his age.

This was the moment I found out my son had sexual feelings. I was walking back past our bathroom door after getting in from work and changing out of my office clothes and putting my tights and knickers in the laundry basket in the bathroom that I'd worn all day. I noticed the door wasn't closed properly, though I always close doors behind me, and as I was going to close it, I heard a noise inside the bathroom. There stood my son, aged 11, with my tights and knickers wrapped around his thing, and the noise I heard was him starting to come. As I looked through the crack in the door, I saw him shoot all over my underwear, quietly moaning and gasping. He then wiped himself off with the tights, moving to put them back in the laundry basket. I just had time to dodge back into my room before he popped out, and back into his bedroom where he'd been doing his homework.

To say I was surprised was an understatement, not just at the fact that he came properly as a man does. not to mention I found myself very turned on at seeing it all. I'll never know if it was just his sexual awareness showing generally, or if it was spurred on by him looking at my legs and figure.

Since then I've had fantasies about anonymous boys his age, taking advantage of me, or using me, and the idea never fails to give me relief in moments when I have to rub myself sat on the loo...