Sydney Sweeney felt uneasy trying to guess a popular internet trend. Sweeney, 28, made an appearance on the Monday, December 1, episode of The Tonight Show Starring Jimmy Fallon. The Housemaid actress participated in the game "What's Behind Me," where Fallon, 51, gave her clues to the scene in the background. As Sweeney faced away from the screen, the audience saw three giant Labubu dolls doing the "six seven" trend while standing in a McDonald's drive-thru. "This is unbelievably great," Fallon teased as he prepared for the game.