Billie Eilish punches Jimmy Kimmel to check an item off her bucket list

Back when she was 12 years old, way before she was one of the world's most famous musicians, Billie Eilish wrote a bucket list.

As she explains to Jimmy Kimmel in the clip above, there are already some items on the list (like meeting Justin Bieber) that she's managed to tick off. But there are plenty of others she hasn't got...