Leave Before The Lights Come On by Arctic Monkeys is a song that delves into the fleeting nature of certain encounters and the aftermath of impulsive decisions. The narrative primarily revolves around the morning after a passionate but temporary night between two people, emphasizing themes of regret, momentary connections, and the desire to escape before reality sets in. Key themes include transience, the intersection of reality and fantasy, and the bittersweet nature of brief romantic interactions. A particularly poignant moment in the song is when the lyrics reflect on the awkwardness and disillusionment that often follow a night of passion, as the characters come to terms with their temporary bond and the necessity to part ways before morning light.