My sister was about 8 and was asking my dad about buttons in the car while Mom and I were in the store. She asked him what the seat-warmer button did, curious because it had a picture of wavy lines above a chair.
Dad told her not to press it, because if she did, it would eject her from the car. She acted like she didn’t believe him but kept asking about it until Mom and I got back in the car. She immediately went for a second opinion.
“Mom, what does that button do?”
“What, this one?” presses it
“Noooo!”
Dad still tells that story 15 years later and can barely get through it without wheezing. My sister is less amused.