JIM WATSON,DOMINICK REUTER/AFP/Getty Images Former Vice President and 2020 presumptive Democratic nominee Joe Biden slammed President Donald Trump for retweeting a photo mocking Biden for wearing a mask, calling Trump an "absolute fool." Biden and his wife wore face masks during a Memorial Day ceremony on Monday in Delaware. Meanwhile, Trump has refused to wear a mask and has been photographed without a mask when touring factories producing PPE amid the pandemic. "Presidents are supposed to lead, not engage in folly and be falsely masculine," Biden told CNN's Dana Bash, his first in-person interview since the pandemic put his campaign on hold. Visit Business Insider's homepage for more stories. Former Vice President and 2020 presumptive Democratic nominee Joe Biden slammed President Donald Trump for refusing to wear a mask, in spite of expert recommendation, during an interview with CNN that aired on Tuesday. "Presidents are supposed to lead, not engage in folly and be falsely masculine," Biden told CNN's Dana Bash, his first in-person interview since the pandemic put his campaign on hold.See the rest of the story at Business InsiderNOW WATCH: Tax Day is now July 15 — this is what it's like to do your own taxes for the very first timeSee Also:Texas Republican party chairman said Trump can hold the RNC in his state if the president moves it from North Carolina like he threatenedGeorgia Gov.