I vividly remember finding my son, who was about two years old at the time, in his bedroom with the talcum powder bottle he'd nicked from the bathroom. He'd discovered that banging it on the floor caused big puffs of powder to spurt out the top of the bottle.
You can imagine my face when I walked into his bedroom, finding this two year old with the biggest smile on his face and the whole room covered in talcum powder. I had to go downstairs to hide my laughter and told his mum to go up and give him a telling off, because I was incapable of doing so.
FWIW, she couldn't manage it either.