Billionaire Trump, 79, Has Cognitive Decline Questioned After Corner Store Gaffe The Daily BeastSchumer calls Trump’s New Yorker card for not knowing corner stores USA TodayConfused Trump, 79, Looks for Someone to Blame After Tripping Up on Simple Phrase The Daily BeastTrump left confused by common term as he admits to making markets nervous The IndependentDonald Trump Questions ‘What’s a Corner Store?’ at Tax Week Event: ‘I’ve Never Heard That Term’ People.com