"Fuck It Up" is a song recorded by Australian rapper Iggy Azalea for her second studio album In My Defense (2019). The song features vocals from American rapper Kash Doll and was produced by J. White Did It, who served as an executive producer on In My Defense and produced the album's previous two singles, "Sally Walker" and "Started". It was released by Bad Dreams Records (Azalea's own record label) and Empire Distribution as the third and final single from the album on July 19, 2019 (the date of the album's release) along with its accompanying music video. Despite not being sent to radio, the single charted at number 40 on the New Zealand Hot Singles chart but failed to make any major impact.
After her 2018 departure from Island Records following the release of her extended play Survive the Summer, Azalea began working on her second album. She specifically specified that she wanted the album to be for her fans to enjoy as, in her words, "critics have literally never given any album I've made a good review". Azalea teased the song in early 2019 while working on her album; the song later had snippets uploaded to YouTube and a music video for the song was shot from June to July 2019. When the album was released, "Fuck It Up" was quickly announced as In My Defense's third single and, after disappointing sales compared to the album's previous singles and Azalea's announcement of a follow-up extended play in Wicked Lips, it became the final release from the album.
A music video for the song was shot on July 11th, 2019, it was later uploaded to Azalea's YouTube channel on July 19, 2019. As of January 2020, the music video has 30 million views. The video begins with Azalea working as a hotel receptionist and meeting an old friend from high school, discovering that their reunion is about to take place but she and Kash Doll were not invited. The rest of the video sees the two rappers spending time in a bedroom and restaurant before finally attending the reunion itself, where they win an award together. YouTube personality Nikita Dragun makes a cameo appearance in the video.