By Matt McCue

If there's no such thing as easy money, the closest thing has to be free-flowing cash from celebrity endorsements. All notables seem to have to do is lend their pearly whites to products, attend media events, and tell the masses they, "Better eat their Wheaties." Yet many top athletes have done a spectacular job of blowing multimillion-dollar deals.

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Slideshow: 15 athlete food endorsement fails

The sins are usually not poor performances, but off-the-field scandals in their many forms: Criminal activity, drug abuse, and the big one that (at least temporarily) has bit Kobe and Tiger -- fraternizing with women who were not their wife.

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Standards about what's acceptable vary from company to company. It was a no-brainer for family-friendly Kellogg's to drop Michael Phelps as pitchman when he was caught smoking pot. But Subway stayed with him, and built a munchies-themed campaign around him and $5 foot-longs. OK, the last part is a lie, but you get the idea. Some things are forgivable. Here are 15 athlete endorsements that didn't work.

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    Tiger Woods, Gatorade

    Jaws dropped when the world's most bankable (married) athlete announced he had been unfaithful to his wife. In turn, Gatorade promptly dropped him in 2010.

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