A fan favorite, “Brianstorm” is about a man named Brian whom Arctic Monkeys met backstage at a gig in Tokyo. Turner has said that he cannot remember Brian now, but he has also stated that “when he left the room, we were a bit in awe of his presence. So we did a brainstorm for what he was like, drew a little picture and wrote things about him.”
The lyrics describe Brian as a charismatic, successful man but they do so in a sarcastic tone, meaning that he was probably not as alluring as the song paints him to be. Alex uses his songwriting skills to bash the character, but perhaps Brian never noticed.