Eilish has previously confirmed that this song is about feeling angry when distancing yourself from a loved one. The shots of her crying thick black ink were inspired by a drawing she received from a fan, which just so happened to align with the song's concept of exasperated sorrow.
And if you thought the heavy liquid pouring out of her eyes was CGI, think again. Eilish actually had tubes on her face that spurted out the solution of Xanthan gum and charcoal water into her eyes. Talk about dedication.