I remember two special times with my youngest son. We were in Santa Cruz, CA on the boardwalk, standing in line at one of the rides. In front of us was a hippy (this was in the early 70s) who was tattooed all over his visible body parts and had several safety pins dangling from his ears. Little Mark kept staring at him and I told him in a low voice that it was not polite to stare at strangers.
Mark picked the one time no rides were going, no gangs of kids were screaming on the rides and his clear voice rang out "But isn't that why they do that so people will look at them?" Made me and DH want to craw under the nearest bench, but the big guy in front of us merely grinned at Mark and told him he was a smart kid.
Then there was the time dear, sweet little 4 year old Mark was being a brat in town, mad at me because I would not buy him a box of kleenex. He didn't want the small box, he wanted his own BIG box of Kleenex. The store was quiet, everyone busy looking for whatever they wanted, so of course he picked that time to comment. With his face as red as his hair, he yelled out "You hate me!! You NEVER want to buy me any Kotex!!!!
You can bet I dragged his little rear end out of that store as fast as I could and shoved him in the car while we discussed his comments in rather loud voices all the way home.