Household cleaner CLR not only has a no-nonsense name—it stands for Calcium, Lime and Rust remover—but it has also long leaned on simple how-to commercials that demonstrate the product's cleaning power. Its new ad, though, gets a little dirty.
The 30-second Web and broadcast spot, from Moon Pie Media in Austin, Texas, jumps on the near-obscenity bandwagon popularized recently by the likes of Kmart with its viral "Ship My Pants" spot, Kraft's Jell-O "FML" campaign and Booking.com's

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