Which iconic brand slogan was originally created as a temporary campaign but became so popular the company kept it permanently?

Brand slogans can define companies for generations and become part of our cultural vocabulary. Behind many famous taglines are fascinating stories of creative inspiration, marketing strategy, and sometimes pure accident. Test your knowledge about the origins of some of pop culture's most recognizable brand catchphrases that have transcended advertising to become cultural touchstones.

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Nike's "Just Do It" - inspired by the final words of convicted murderer Gary Gilmore before his execution
McDonald's "I'm Lovin' It" - originally created for a Justin Timberlake song before becoming the brand's slogan
Apple's "Think Different" - personally written by Steve Jobs in response to IBM's "Think" slogan
Kit Kat's "Have a Break, Have a Kit Kat" - derived from a 1930s British tea break tradition