The actor stumped the Grammy winner during an impromptu trivia round about the beloved sitcom.

“Every time I hit that episode that says finale, I’m always like, goddamn it.”

Wilson snapped back to tell Eilish she needs to find a new show to obsess over.

Billie Eilish, Rainn Wilson

Scott Dudelson/Getty Images; Frazer Harrison/Getty Images

“William, it’s time to move on!”

Willson said, referring to the singer as “William Eyelash” during their conversation.

“It’s time to move on to another show, really.

His idea changed quickly after the pair played a littleThe Officetrivia which Eilish mostly failed.

Watch the full interview above.