"Van Halen" trended worldwide on Twitter all day Monday because Eilish, who turns 18 later this month, wasn't familiar with the influential rock band that was at its height in the 1970s and 1980s. On his Nov. 21 show, Kimmel quizzed Eilish on the pop-culture of 1984, when he was 17. Eilish was also unfamiliar with The Cosby Show, Run-DMC and Huey Lewis.
TOPICS: Billie Eilish, ABC, Jimmy Kimmel Live!, Late Night, Van Halen