In the sports world, it's never a good thing to encourage cheating. Beyond that, the old saying that "If you ain't cheating, you ain't trying," probably never had this connotation.

Reebok quickly pulled advertisement displays in Germany that declared "Cheat on your girlfriend, not on your workout," after being barraged by an outraged public on Twitter.

Cheaterville.com, a site devoted to calling out infidelity, was particularly outraged.

"This form of advertising shows a dishonest and disrespectful attitude towards women," James McGibney, founder of Cheaterville, said in a statement. "Your company should be ashamed to have even placed this ad."

Reebok has been quick to apologize.

"We regret that some offensive Reebok materials were recently printed," spokesman Dan Sarro said on Tuesday. "The signs were removed as soon as we were made aware of them. I can assure you that Reebok does not condone this message or cheating in any way. We apologize for the offensive nature of these materials, and are disappointed that they appeared at all."

Many people couldn't believe the ads truly existed, which led to this video posting on YouTube.

The public image damage couldn't come at a worse time for the company, which has seen its value plummet on the heels of a $25 million fine handed out for false claims as part of the company's Easytone campaign.

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-- Max Thompson is the Senior Editor at ThePostGame. Follow him on Twitter: @maxthompson.

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