My daughter comes from school (First grade).
I asked her how the day went, what were you doing?
She told me everything and said, “Behold, only boys make noise and speak bad words.”
I try to figure out what bad words they are saying. The daughter replies that she can't repeat such horrible words, but they start with the letters "P", "B" and "D", after long conjuring it turned out that these are the words "foolish", "foolish", and "balbes".