From a very early age my wife and I told our son that there are times and places for everything. I told him look when you're in class you have to be quiet and listen to your teacher but when you go out to the playground you can scream and be silly.
I got pregnant at 40 by surprise. It's funny because when we found out we were pregnant I said 'Okay let's experience that.' You just have to just go with it because it's rare.