So, when I was quiet young, maybe 5 or 6, a neighbour girl and I played doctor. Each time we did it got more intense. At one point, she being older than I and more imaginative, suggested that we stimulate each other at the same time to see what felt good and what didn't. I agreed but since our intimate parts were different and we had fingered each other anally, we decided that that was the one place we had parts and feelings in common. The idea was that we would both insert a finger in each other, then what one did that felt good the other would do the seem thing right away. In this way we were able to see if it felt the same for the other. She would say, I like that (what I was doing to her insides) and she would do the same to me to see if it felt good to me as well. I can tell you we found out a lot about each other by doing this simultaneous copying.Has anyone done anything similar at any age? I suppose if you're doing it with the same sex more possibilities open up.