My first witness experience of a BBC powerful behaviour has happened one saturday afternoon at the pool, when I was a teenager.

I was informed about sexual relations - vanilla sex from movies and magazines - but I had never actually participated in or witnessed such sex activities firsthand. So this was a fundamental and defining experience in my sexlife.

My sister, a few of our mutual friends, and I were heading back from the pool to the locker rooms.

Just as we were about to retrieve our belongings from various lockers arranged in several rows, we briefly saw from another distant raw one of my sister's friends, a thin girl who was quite tall for her age, with shiny blonde hair and blue eyes, being led by the arm by a rather imposing black man into one of the locker rooms.

Before we had a chance to look at each other in surprise and astonishment with my sister, the locker room door had closed.

We could only hear the sounds of movement, and few sharp thuds against a wall of the locker room. The characteristic sound of a wet swimsuit being taken off was clearly distinguished.

We didn't know how to react with my sister, and most of our group of friends hadn't seen a thing during those few seconds when the situation had taken a sudden turn with that blonde friend of ours, who's just as inexperienced as we are.

So everyone went to change in their own locker rooms, in front of their own rows of lockers, and my sister was careful to avoid choosing a locker room too close to that of her friend, who had been firmly led away by the black man.

The only locker room left was the one next to that unexpected couple's, and when I finished gathering my things from a locker and headed toward the changing rooms, I was in for a shock.

From underneath of the door of the closed locker room, I could see the tiny soles of that girl's feet and immediately realized she had been put on all fours.

Her little white feet trembled in rhythm, betraying the black man's thrusts.

I stood there for a few minutes, watching this submissiveness and the rhythm that never faltered. Although I was starting to feel cold, soaked as I was, but I couldn't take my eyes off her feet, which seemed so helpless.

The scene was strangely silent, and I think she was holding back her moans out of shame at being discovered and what her friends and family would say about it. But her toes curled at times, revealing the harshness of the fucking and likely changes in the angle of penetration.

As I gradually came to my senses, I decided to go into the only empty locker room so my friends wouldn't find me late and ask questions about it.

So I changed my clothes right next to this guided girl, whose body was being subjected to the black man's desires. As I took off my swimsuit, I started to get an erection while the BBC sexual satisfaction continued right behind the thin wall.

We were both entering a new phase in our lives, each in our own way. She, by being purely used. I, by becoming aware of her new role in life.

My unsettling surprise and my inability to react gradually gave way to an exciting curiosity and the satisfaction of hearing her pussy finally take a man inside.

I had already fantasized about her body, imagining her long legs spreading apart before me on her bed. But the reality was quite different : she was struggling to stay on all fours on the cold tile floor as best she could, fucked from behind with her legs close together because of the cramped space of the locker room and probably the concern about not bumping into the walls, so as not to alert her friends.

Faced with this situation, I let my sister and her group of friends leave, staying with my own friends without saying a word of this stunning and unexpected display of virility.

But since I was staying in the locker room next to the BBC and his fresh fucktoy - whose belongings were scattered on the floor - I took her pair of white socks with blue polka dots as a gift of that memorable day.