From “Toilet Talk” to Curse Words: How Forbidding Turns Curiosity into Weaponry

Q. We have a 4-year-old turning 5 next month, and we have a lot of toilet talk going on. We’ve tried ignoring it, explaining why it’s not okay and that it’s not okay to use in our house. Nothing seems to work. He just lays around and says: penis, boobies, vagina and...