When I was 8 me and my best friend would watch each other pee and then finger ourselves (and each other). Sometimes we’d go down the far end of her backyard, take off our shorts, spread our legs, hold our pussys open and watch as we peed.
My and my neighbor used to do that. She was the same age as me and we spent so much time together and nights at each other's houses. We were 6 when that started. We used to shower together so we would put our leg on the side of the tub and hold our pussy open and see each there pee. And then we touched each other. It went on for years and by the time we were 8 we were really fingering each other like crazy.
When I was 5, me and my best friend had a lot of sleepovers. When she was at my house, we used to take baths together before bed. We had a huge oval tub and would lay opposite each other, open legs and hod out pussys open. Water would go inside and we would push it out and I guess we peed a little. We always thought it was hilarious. By the time we were 7 we had gotten a little more adventurous and would watch each other pee in the shower and finger ourselves. By 8 we were fingering each other all the time.