Adele revealed she’s a terrible, terrible liar when she played ‘Box of Lies’ with Jimmy Fallon on The Tonight Show earlier this week.

The aim of the game is to open numbered boxes on either side of a partition, and then try to lie to the person across from you about what was in the box. If they’re correct on whether you are lying, or telling the truth, they get a point.

Unfortunately, Adele lost the game to Jimmy, due to her shocking inability to keep a straight face.

Still, she’s probably not too cut up about it — Adele’s 25 just shattered the record for first-week album sales.

Check out the hilarious video!