What slogan did Lay’s potato chips popularize in its 1963 advertising campaign?

Lay’s popularized the slogan “Betcha Can’t Eat Just One” in its 1963 advertising campaign.

The line promoted Lay’s potato chips by focusing on their irresistible taste rather than on nutrition, ingredients or serving size. The conversational “Betcha” made the slogan sound like a challenge between friends, helping it stand out from more formal product claims.

The campaign became a long-running part of Lay’s brand identity in the United States. It also influenced how snack advertising presented eating: the appeal was not simply that the product was tasty, but that consumers would find it difficult to stop after one chip.

The slogan is often confused with Pringles’ “Once You Pop, You Can’t Stop,” which appeared later and belongs to a different brand. Both lines describe repeated snacking, but Lay’s canonical phrase begins with “Betcha” and dates to 1963.