The "Hello" songstress is having a banner week, with her latest album, 25,selling more than 2 million copies in its first weekend. But she was no match for Fallon when it came to the game, which proved that she can't lie her way out of a paper bag.
"I have been waiting my whole life to do this," Adele said before the game began. "It was either this or the Lip Sync Battle."
Hopefully next time she'll show off her lip-syncing chops.
Check out Adele's edition of "Box of Lies" here - and her priceless reaction when Jimmy calls her out for telling the truth in one round: