Advertising watchdog will launch its first national advertising campaign early next week aiming to get consumers to report false advertising and marketing.

Using humor to gain support, the spot features people uttering the kind of truths they normally wouldn’t dare say out loud, such as a man telling a woman her tush looks too big or a driver nonchalantly admitting to an officer that he’s been driving 20 miles over the speed limit. Folks are seen repeatedly singing “The truth’s not always easy…” with a closing message that drives home the point: “But in advertising, it’s the law.”

They will run in display, digital, and video forms in major newspapers including the New York Times, the Wall Street Journal and USA Today, in addition to Google ads and social-media sites including YouTube, Twitter and Facebook.