Which famous brand slogan was originally created as a temporary campaign but became so successful that the company adopted it permanently?

Brand slogans are powerful tools that can define a company's identity for decades. Some of the most iconic taglines have fascinating origin stories that reveal strategic marketing decisions or happy accidents that changed advertising history. Test your knowledge of how some of the world's most memorable brand slogans came to be!

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Nike's "Just Do It" (inspired by the final words of executed murderer Gary Gilmore)
McDonald's "I'm Lovin' It" (originally developed for a Justin Timberlake song collaboration)
Apple's "Think Different" (personally crafted by Steve Jobs as a response to IBM's "Think")
L'Oréal's "Because You're Worth It" (written by a female copywriter addressing women's empowerment in the 1970s)