Fxxk It

"Fxxk It" (Korean: 에라 모르겠다; RR: Era moreugettda; lit. Eh I don't know) is a song recorded by South Korean boy band Big Bang. The group's first single in over a year, "Fxxk It" was released alongside "Last Dance" on December 13, 2016, in conjunction with the group's third Korean-language studio album Made through YG Entertainment. It was written by long-time group collaborator Teddy Park with group members G-Dragon and T.O.P, with production handled by the first two contributors along with R. Tee.

Musically, "Fxxk It" is an electronic hip-hop track that blends instrumentations of horns, synths, and tropical beats. The song's lyrical content revolves around the notion of letting go of ones worries. It was subject to positive reviews from music critics; The Star highlighted its "playful persona and eclectic artistry" while Dazed was favorable towards its easy-going production and the members' vocal delivery.

The song was a commercial success—it topped the Gaon Digital Chart for three consecutive weeks and sold more than 2,500,000 digital units in South Korea. Elsewhere, it peaked within the top ten on the Japan Hot 100 and entered the Canadian Hot 100 at number 98. BigBang promoted the song with live performances on the music program Inkigayo throughout the month following its release. It was also included on the set lists of their ongoing 10th anniversary 0.TO.10 concert tour and Big Bang Special Event fan meeting in Japan and South Korea.