Which famous language-related company's tagline used a grammatically incorrect phrase that eventually became widely accepted in popular speech?

Marketing taglines are powerful linguistic tools that companies use to create memorable brand associations. The best taglines leverage linguistic devices like alliteration, rhyming, metaphor, and cultural references to become embedded in our collective consciousness. This trivia question explores how language expertise shapes successful brand communication and how linguistic elements contribute to marketing effectiveness.

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Apple's 'Think Different' (1997)
Merriam-Webster's 'Words Matter' (2014)
Rosetta Stone's 'Language Learning, Reimagined' (2012)
Grammarly's 'Write With Confidence' (2015)