If I witnessed anything like that, I don't remember, because my younger brother was born thirteen months after I was, which means I was about four months old when he was conceived. I was eleven years old when my younger sister was born, but I don't think I saw anything concerning that.
Yes, I might have. That's what is implied in my response. There are many probabilities, but having been a few months old at the time, I do not know today which one of them actually took place then. ~
No, I never ever saw my parents do any more than kiss. I was no stranger to where babies came from, for most of my first eleven years of life my mother was either pregnant or tending a new baby, but I never saw them do the deed. My kids have caught their mother and I "at it", when they were little it was "mummy and daddy are play wrestling". My daughter also walked in on us when she was a teenager - grossed her out, but that was her fault. She should have knocked.
Randy D 