The distorted ear-splitting bass in the chorus was designed to sound uncomfortable. "If you're just sitting in a room and you listen to this song, the chorus kind of, like, throws itself at you. Like 'I'm in their secondhand smoke,'" Eilish said to MTV News
of what she describes as "broken-sounding bass."
She added, "I just wanted it to sound the way that it feels to breathe in recycled breath. Recycled, poisonous breath, I may add. I just wanted it to feel miserable."