Billie Eilish Not Knowing Who Van Halen is Causes Van Halen to Trend on Twitter

Van Halen began trending on Twitter today (December 2), but it had nothing to do with Eddie Van Halen's rumored health issues, and it somehow had nothing to do with David Lee Roth saying something mildly insane.

No...Van Halen trended because alt. pop wunderkind Billie Eilish said she didn't know who they were.

The source of her lack of Van Halen knowledge came from a recent appearance on Jimmy Kimmel Live! where she was asked if she could name a Van Halen song. Eilish's response: "Who?"

Obviously, there were MANY reactions to this clip. Here are just some of the best ones.