"Fluorescent Adolescent" is a song by the Arctic Monkeys and the second single from their second album Favourite Worst Nightmare. It was released on 4 July 2007 in Japan and 9 July 2007 in the United Kingdom.
The music video is based around a fight between a group of clowns and a group of non-clowns at an abandoned warehouse. The presumed leaders of the two groups have a flashback showing that they were friends when they were young children. During the flashback, photos of the band as young children are shown. Throughout the fight, each group leader attempts to kill the other. As the music video climaxes, the non-clown leader tries to run over the clown leader. However the clown leader notices the non-clown leader's car (with the non-clown leader inside) has been leaking fuel and drops his cigarette lighter. The car quickly catches fire and the clown leader looks on as his former friend burns and the music video ends. The car used is a Morris Marina. This scene is similar to the ending of Radiohead's "Karma Police" video. A mistake in the video is when a non-clown member takes a chain out of the trunk and breaks the windshield. Later the non-clown leader jumps into the car and the windshield is fixed.
The video is loosely inspired from the John Cooper Clarke (who Turner admits he's a fan of and takes lyrical inspiration from) poem "Out of Control Circus" which is also printed inside the CD release of "Fluorescent Adolescent". The lines such as "out of control fairground" and "homicidal clowns" support this.
The video was preceded by a warning of violent images. In an MTV interview, Turner stated that the music video "is the best thing we've ever done" while Jamie Cook hailed it as "...probably one of the best videos in the last, like, 10 years".