It's your choice of whether you want to ask them about it. Or just light touching or caressing? It rarely interferes with the way I live my life. When I was a kid I showered with my older sisters because we were close and they got me to shower that way. She said sarcastically, "I wonder what that is," pointing at it. I am afraid that things might get unpleasant between us if it did happen and we acknowledge it.
From the time I was 10 years or so, if there was anything bothering me, I would write it down.
My sister touched my brothers penis?
I left the room for a moment to check on dinner, and when I returned to the bathroom, my son had some wonderful news. Any parent knows that to pique a child's interest in anythingyou just need to make it off limits. They're twins, both 14, and I'm their younger sister, 13 years old My brother was trying out a new pair of running spandex he got. It was arousing I have to admit even till this day. At the time, I thought it was hysterically funny, as did the friends and family with whom I shared the story.