Multiple choice general knowledge Which year did Lay's had the slogan: Betcha can't eat just one 1970 2009 2008 1950 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Lay's potato chips launched their famous slogan 'Betcha can't eat just one' in 2008 as part of a global marketing campaign. This slogan emphasized the addictive nature of the chips and became one of the most memorable snack food slogans.