Back then when I was 11, I had an unusual and unforgettable
experience while I was watching my brother's collection of
pornography. I sat with my legs crossed at that time on a wooden
chair and everytime the girl screamed out, I pressed my leg
accidentally and found it quite pleasurable. So I did it according
to the rhythm of the screams, oh ahh oh ahh ahh... and oh, it came,
it came, the whole of it.
It then a habit.