[19] The song opens with the lyric "I went my own way and I made it/I'm your favorite reference, baby", which Hannah Mylrea of NME detailed as an avowal of Charli XCX's "self-confidence, celebration and the knowledge of the place [she] holds in the musical landscape" and which Laura Snapes of The Guardian called "indicative of her cult status" and her "wealth of lore".

[25] Spilde surmised that the lyric was Charli XCX's way of expressing that "she couldn't be more tired of critics conflating her ego-inflated persona with the quality of her music".

[19] Its further lyrics reference several of her colleagues and friends:[26][27] Cook ("You gon' jump if A. G. made it");[11] model Gabbriette ("Call me Gabbriette, you're so inspired"), the lead singer of the disbanded punk rock band Nasty Cherry—whose formation by Charli XCX was covered in the Netflix docuseries I'm with the Band: Nasty Cherry—and fiancée to Matty Healy, Charli XCX's fiancé George Daniel's bandmate in the 1975;[28] and, in the song's chorus, actress Julia Fox ("I'm everywhere, I'm so Julia"), who rose to prominence with a role in the 2019 film Uncut Gems and for her highly publicized relationship with Kanye West.

[32] Abigail Firth, for Dork, also wrote that the "cocky and cunty" atmosphere of "360" is shown to "serve as a facade" based on the insecurities she expresses throughout the rest of the album.

[34][30] For Paste's review of Brat, Eric Bennett named "360" "an all-timer in her catalog already" due to its "simple but thrilling beat", over which Charli XCX "absolutely floats" with an "icy, disaffected cool".

[35][36][37] For The Daily Beast, Coleman Spilde wrote that "360" was "a lyrical masterclass in hotness" and "an intensive on vanity so hyper-focused that it could be taught at the Learning Annex".

[38] Describing it as an "it-girl anthem", Lucas Martins of Beats Per Minute complimented "360" on its "watertight groove", its "undeniably catchy hook", and its lyrics, which, he wrote, "show Charli unafraid to revel in her impact".

[27] Emily Bootle wrote for i that the song's lyrics "I'm so Julia" and "666 with a princess streak" were among the most memorable on Brat and contained tongue-in-cheek millennial irony.

vice president Kamala Harris, made and posted by George Washington University student Aly McCormick in July 2024 and based around her "You think you just fell out of a coconut tree?"

[57] Its American chart success coincided with the announcement of Harris's presidential campaign and Charli XCX tweeting "Kamala IS Brat".

Upon entering through the back door, she finds a group of models, actresses, and influencers, including Gabbriette, Fox, Rachel Sennott, Chloe Cherry, Salem Mitchell and Richie Shazam, all having dinner in order to pick a "new hot Internet girl" to fulfill a prophecy that would prevent their extinction.

[19][62][63][64] Between several match cuts, Charli appears in various locations: at a gym, where she pours herself a glass of wine in a white tank top with no bra on[65] while she vibrates on a vibration plate and is accompanied by Sennott and Fox, who are unenthusiastically lifting weights and taking selfies; in a hospital hallway, where she straddles an old man in a gurney next to Gabbriette and Consani, both of whom are posing smoking cigarettes and posing next to her; in a photo booth next to actress Hari Nef and influencer Blizzy McGuire; and in the street, where influencers Emma Chamberlain and Quenlin Blackwell apathetically observe a car accident they just caused.

[63] Toward the end, Chloë Sevigny exits a black Porsche 992 convertible[66] and tosses a cigarette into a garbage can, lighting its contents on fire, as she and Charli XCX strut down the street.

[75] Sevigny appeared in it in between filming for the Netflix series Monsters: The Lyle and Erik Menendez Story after a mutual friend between her and Charli XCX direct messaged her about the song and music video treatment.

He based each of the girls' looks in the video, including an Yves Saint Laurent jumpsuit worn by Charli XCX, on elevated, "hot and bitchy" versions of their personal style, which he observed on their Instagram accounts.

[17] Brands featured in the video include Dion Lee, Knwls, Courrèges, Eytys, Vacquera, and Marni, the last of which was also worn by Charli XCX at the 2024 Met Gala.

[78] In an opinion piece on Brat for British Vogue, Mahoro Seward wrote in July 2024 that "everything that has unfolded since the first minute of Aidan Zamiri's masterful music video for '360'"—which he likened to "a vignette of what The Last Supper would have looked like if Jesus and his disciples were modern-day It-girls"—"amounts to a watershed moment in pop cultural history".

[29] Olivia Petter of The Independent deemed the music video for "360" the introduction to the "brat identity", which she wrote was "fundamentally a celebration and interrogation of girlhood in all its complexities", and Lindsay Zoladz of The New York Times called it "instantly iconic".

Club's Drew Gillis wrote that "360" was "a pretty standard music video" that "does land one coup with the appearance of Chloë Sevigny".

[92] On 17 February 2023, producer Patrik Berger posted a picture on Instagram from a studio session with Charli XCX and Swedish singer Robyn.

[99][100] Robyn sings about her early start in the music industry ("I started so young, I didn't even have e-mail/Now my lyrics on your booby") and references the success of her 2010 song "Dancing on My Own" ("Killin' this shit since 1994/Got everybody in the club dancing on their own") and the Clash's 1979 album London Calling, while Yung Lean compares himself to "David Beckham in the noughties" in the first verse and quotes Tony Montana in the 1983 film Scarface with the lyric "Who do I trust?

Charli XCX also raps that she, Robyn, and Yung Lean are "three child stars out here doing damage" with a "really very special language", as all three began their music careers as teenagers.

[102][37] Stereogum named it the best song of the week of its release, with Danielle Chelosky writing that it "sounds like friends having fun, not at all forced or insincere" and praising Yung Lean's "effortlessly magnetic intonations", Robyn's "charming" verses, and Charli XCX's "monotone rap".

[103] Conversely, Sal Cinquemani of Slant wrote that the remix of "360" "largely wasted" Robyn's contribution to the song and criticized it as "cluttered".