So what message are we sending to our children, when pop songs containing forbidden words appear all over the radio with strategically placed bleeps? I'm afraid we're turning the whole thing into a joke, with the added detriment of endowing a set of words with the intoxicating allure of the forbidden. Better, I think, to show our kids by example how to use proper grammar, to help them understand that some may be offended by language, and to treat profanity in movies or song as just words in a work of art, which sometimes makes it better; sometimes worse.
Everyone knows from experience that their kids' exposure to profanity at school, and on the playground is unavoidable. But we can help them understand, at home, and through exposure to the arts, how truly powerful words can be. There doesn't seem to be anything gained from covering their ears, let alone washing their mouths out with soap.