"Birthday" by Jeon Somi is a song celebrating self-love and individuality. The lyrics talk about how every day can be like a birthday when you embrace who you are and do what makes you happy. The artist rejects conformity and asks for her desires to be respected above others. She takes pride in being unique and wants to express herself freely without compromise. The song carries an upbeat, energetic vibe, and the dance moves aim to match the theme of celebration and freedom. Overall, "Birthday" is an empowering anthem that encourages everyone to embrace their individuality and live unapologetically.