"Formula" by Labrinth is a dark and thrilling song that explores the feeling of having a "screws loose" and living for the thrill of risky behavior. The opening line references Einstein's famous scientific equation, "E equals mc squared," which sets the tone for the rest of the song's references to mental instability and wild behavior.

The lyric "I got a blimp inside my head" suggests that the singer's thoughts and emotions are larger than life and difficult to control. He then refers to the movie "One Flew Over the Cuckoo's Nest," implying that he feels like he is imprisoned or controlled by external forces. The line "The lights are on, but there's no one here" suggests a feeling of emptiness or disconnection.

The repetition of "screws loose" and "propane" emphasizes the idea that the singer is feeling somewhat unhinged and reckless. The line "Puffing with the dragons" could be interpreted as a drug reference or symbolizing hanging out with dangerous people.

Overall, "Formula" seems to be about embracing risky and impulsive behavior as a way of feeling alive and escaping from the monotony of everyday life. The song's dark tone suggests that this type of lifestyle is not without consequences, but it also hints at a sense of excitement and freedom that comes with living life on the edge.