At first, it seems like Eilish is sharing her own experience in "8," but the track is actually written from the perspective of someone she hurt. "I was just a d*ckhead for a minute and the only way I could deal with it was to stop and put myself in that person's place," Eilish reveals in Apple Music's description of the song.
This two-minute composition also features a ukulele. Eilish made sure to utilize the instrument on her album When We All Fall Asleep, Where Do We Go? because it's what she used to help write her first-ever song around age 7. During her December appearance in James Corden's Carpool Karaoke segment, Eilish also revealed that the first song she learned on the ukulele was "I Will" by The Beatles.