“good 4 u” is the third single from Olivia Rodrigo’s debut studio album, SOUR. The song’s hook is laced with sarcasm, as Olivia sharply addresses her former partner for quickly moving on from their relationship without much of an issue or any care towards her at all. Like with her previous single, “deja vu,” Olivia again experiments musically, this time using drums and a guitar as primary instruments to emphasize her anger building up as the song progresses. Its angsty, pop-rock sound has drawn comparisons to 2000s acts like Paramore and Avril Lavigne. Furthermore, similarities between “good 4 u” and Paramore’s 2007 song “Misery Business” went viral after its release, resulting in an interpolation being officially credited in August 2021.

In the music video, Olivia plays a high school cheerleader who is feeling distraught and vindictive over her former partner. She purchases a container of gasoline from a convenience store and appears to destroy her ex’s bedroom, setting it ablaze and causing it to flood. In the final shot, Olivia submerges herself into a lake with glowing red eyes—a subtle homage to the 2009 cult classic Jennifer’s Body in which Jennifer stares into the camera with bloodshot eyes while swimming in a lake.

Olivia first teased the song and its music video on April 26, 2021, by posting an Instagram photo showing her dressed as a cheerleader. On May 9, 2021, the song was revealed to be her next single in SOUR’s album trailer shown at theatrical screenings of In The Heights. The next day, its release was officially announced by Olivia on Instagram.

In the US, “good 4 u” debuted at #1 on May 29, 2021, her second chart-topper there. In the UK, it debuted at #2, then held the top spot for five weeks – the most by a guitar-driven song since the four weeks spent by Evanescence’s “Bring Me To Life” in 2003. The song has also topped pop charts in over a dozen more countries around the world.