Fallon got a little help from his young daughters -- 6-year-old Winnie and 5-year-old Frances, whom he shares with wife Nancy Juvonen -- for a fun video he posted to Instagram, in which he sings some sage advice while strumming a guitar in the bathroom mirror.
"Wash your hands, wash your hands, do NOT touch your face," Fallon croons, twice over, as the video cuts to his little girls adorably smiling at the camera while washing their hands in the sink, with soap. "If you wash your hands and do not touch your face then the world will be a better place."
Whether it's the beaming smiles on his daughters' faces or Fallon's trademark endearing earnestness and fun demeanor, the comic's sweet (and useful) little jingle is a pleasant bright spot during an increasingly dreary time.
On Thursday, Fallon hosted a very unique Tonight Show -- the last before NBC announced they were suspending production amid the outbreak -- and delivered a monologue to an empty theater, sans studio audience.
Fellow late night talk show host Stephen Colbert did a similarly audience-free episode, while both hosts shared messages of encouragement during the growing panic over the spread of COVID-19.