Which iconic brand tagline was originally created as a temporary placeholder but became so popular with test audiences that the company permanently adopted it?

Test your knowledge of pop culture marketing history! Behind every memorable brand is often an iconic tagline that became part of our cultural lexicon. Some taglines are so powerful they outlive their original campaigns and become permanently associated with brands for decades. This trivia challenges you to identify which famous tagline has an unexpected or fascinating origin story that changed pop culture forever.

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Nike's 'Just Do It' (inspired by the last words of executed murderer Gary Gilmore)
M&M's 'Melts in your mouth, not in your hands' (created during WWII when chocolate was sent to soldiers in tropical climates)
McDonald's 'I'm Lovin' It' (originally part of Justin Timberlake's solo music career launch)
Apple's 'Think Different' (personally written by Steve Jobs in response to IBM's 'Think' slogan)