Back in the very early 60"s, I was in my last year at school -- and a virgin. My mum got sick and ended up in hospital and with dad having to work, I was shipped off to my aunt Flora for the next few weeks. Thinking back she would have been in her mid-70s by then. But she was quite a liberal lady for the day, saying things like "Don't worry if you see me naked" or "I am used to being on my own, you see."
In all the time I was with her she never closed the bathroom door and I'd often heard the hiss of her strong piss as it hit the water and being young, I was intrigued.
Coming in from school the next day she was nowhere downstairs. I called again and she said she was in the toilet. As I approached the toilet, I heard the familiar strong gushing of pee hitting the water below. As the door was open there she was, skirt up, wearing stockings and suspenders, but instead of pulling her panties down, she'd left them up and was wetting herself.
Her pee was flooding through the thick cotton material. She wore old-fashioned panties; the type old ladies wore then. She told me not to be alarmed, it was just something she liked to do- it got her excited. She then touched my crotch and I began to get hard.
After a nice tea Aunt sat next to me as we watched TV she asked me if I had a girlfriend and when I said no, she said she said that she could show me what girls liked -- like she liked peeing through her pants.
When I just nodded, she leaned across and started to kiss me, eventually, we had our tongues in each other mouths and what was a turn-on was when she started to dribble a lot of saliva into my mouth.