Mine was our CRT TV. I would rapidly push the power button on and off because I thought the picture coming and going looked cool but eventually it fell inside of the TV. I think I later stuck a magnet on the TV.
Not looking for Reddit answers like “My parent’s marriage”
For real. He could have very reasonably been very angry at me, and it might have defeated my curiosity before it really got a chance to get going, but by doing what he did, he associated it with good feelings that continued through until now.