I was really young, probably 5 or 6, back when I lived in Southern Ontario. There was this girl down the street named Emily that I used to play with. Her dad had passed away and it was just her and her mom living alone so naturally there was less parental oversight available than there would normally be. Anyway, I forget the specific circumstances, but she would let me come into the bathroom when she was peeing. I wasn't allowed in when she was pulling her pants or whatever up and down, but I was allowed while she was sitting on the toilet... at least at first. It's a really hazy memory f