Fallon played a clip of Biden, who wore a face mask while greeting lawmakers in the White House. The video showed Biden shaking hands with Sen. Chuck Schumer (D-N.Y.) just before he took off his mask and coughed into his hand.
“After he signed the bill, everyone was like, ’No, you can keep the pen!” Fallon quipped as he fake-coughed and licked his hand.
Biden wasn’t the only president Fallon mocked on Tuesday. He also remarked that the bill was the most “significant” climate legislation in U.S. history.
Watch Fallon’s full monologue below: