Children often love to be naughty, this is quite normal. It can be fun and harmless. But sometimes it can surprise, and not always positively.
Even if you are sure that your child behaves very well, think carefully whether you should leave him alone, especially for a long time. Otherwise, something like that might happen.
I cannot imagine what I would have done in such a situation if I had seen how the money I earned would have been so cut by my child.
Too high price I am not willing to pay. And it would be better if this did not happen. But never say ‘never’.