The lyrics of the song "Headlock" talk about a strong attraction that the protagonist feels towards someone. This person approaches the protagonist in a different way than other people, and the protagonist wonders what is making them feel this way. The protagonist apologizes for doing something unexpected and knows that the other person might not be able to react to it. Despite knowing that it's unfair, the protagonist decides to start something with this person. The protagonist is captivated by the intense gaze of this person and feels like they can't escape their hold. They warn the other person to be careful because they can't resist them and doesn't want to deny their feelings. The song goes on to describe the overwhelming chemistry between them and the protagonist's confusion about their own reactions. The chorus emphasizes how the protagonist feels trapped by this person, both physically and emotionally, and can't resist their allure. The bridge repeats the idea of being captivated and losing control, with the protagonist admitting that they have the other person in a "headlock." The chorus repeats, with the protagonist acknowledging that they expected this to happen and can't resist the pull of their emotions. The song ends with a final repetition of the chorus.