When I was five or six and maybe even before then, every time we had to go out my mom invited me to piss. If I said that I didn't need to, she'd take me to the bathroom, put me in front of the toilet, then move her hand up and down. Sometimes she passed all her hand quickly over the top of my small cock.
My cock would become harder and after a while I'd start to feel better, then I'd pee. At the time I couldn't understand what she was doing, but I started to do this to myself every day.
I love this site, especially the stories with moms or aunts.