Watch Adele Perform ‘Water Under the Bridge’ on Jimmy Fallon

Adele, whose third studio album 25 is poised to break album sales records, appeared on Late Night with Jimmy Fallon on Monday, where the star serenaded the crowd with song from her latest project.

The singer performed “Water Under the Bridge” from her album, which sold 2.3 million copies in its first three days.

The star also host faced off against Fallon in a game of “box of lies.” In the game, as its name suggests, players try to guess if their opponent is lying about the contents in a secret box, which only one player and the audience can see.

Adele went first, telling Fallon her box contained a T-Rex dressed like a fairy. And well, Fallon pretty easily called her bluff. Check out the full clip to watch the two try to hold their best poker faces.