I thought of one that happened to me, I think I was 16 and regular pioneering at the time. I was in FS with my friend, I think she had to be about 18, and we were in a van with older married sisters, my friend and I were the only single ones. There were 6 of us in this van and my friend and I of course were forced to sit in the back (meaning we couldn't escape by jumping out of a moving van), anyway, the conversation turned to discussing molestation.
The two oldest sisters sitting in the front then started going into DETAIL about how they had been molested, and it wasn't just "I was molested by..." No they went into DETAIL.
I was shocked! This was not a good topic to be discussing in FS and especially since you had for sure one minor in the car.
I also remember one time with a car group of sisters talking or should I same comparing the size of their husbands "junk" (Here in the states "junk" refers to a person's private parts).
Has anyone else experienced this, I know you have, but care to share it? Any topic will do it doesn't have to be only about the things I already mentioned :)
G