"What's the Worst That Could Happen?" was an ad slogan for which company?

A good ad slogan is a punchy, effective, and powerful snippet which advertisers use to promote a product, brand, company, etc. Introduced in the 1980s, the “What’s the Worst That Could Happen?” ad campaign was a great success for the soft drink, Dr Pepper. The words were used in a catchy song that featured humor and fun to help make the ad memorable and effective. Dr Pepper knew its brand; it also knew its worldwide audience. That’s why this campaign worked well, especially in the UK (playing on the fact that many UK consumers didn't know what the drink tasted like and were in many instances suspicious of trying it).

Ad critics and fans note that the catchy slogan: "Dr Pepper, What the Worst That Could Happen?" is a slogan, to its credit, that doesn’t go away. It is exactly what the company wants and needs for brand awareness and sales.