The song "Billboard" by Jonas Blue and Tifa Chen tells the story of a past relationship where one person seems to be constantly seeking attention and validation from the other, but ultimately ends up hurting them. The lyrics reference the metaphor of a billboard, with the other person being "painted in the sky" and appearing everywhere, even though they are not wanted. The singer pleads with this person to leave and stop causing them pain. Despite their efforts to move on, the memory of this person still lingers in their mind like a billboard that cannot be erased. Overall, the song highlights the struggle of letting go of a toxic relationship and the lasting impact it can have.