Which iconic advertising slogan was NOT created for the brand it's commonly associated with, but was actually adopted after being improvised by an actor during a commercial shoot?

Advertising slogans have become embedded in our cultural consciousness, often transcending the products they represent. These catchphrases have influenced our language, sparked memes, and become reference points in pop culture. Test your knowledge of the advertising world's most memorable taglines that have shaped our collective vocabulary and entertainment landscape.

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"Wassup?" (Budweiser)
"I'm Lovin' It" (McDonald's)
"Can You Hear Me Now?" (Verizon)
"Where's the Beef?" (Wendy's)