Thanks, Admin, for bumping this topic. It is one of my favorite interests.
For me, the short answer to that question is many decades, essentially all of my life. It seems to me that I was born with a strong interest in female peeing, starting quite literally at my mother's knee.
The long answer is a bit of a story, and I apologize in advance for the length of it. But I think it contains some interesting insights and history.
I was born and raised in the Midwestern US, during World War 2. At that time, most women wore dresses or skirts, rather than pants, all the time. Undernea