"Shiny Boy" is a song by JOY, a member of the South Korean girl group Red Velvet. The lyrics describe the feeling of falling in love with someone without realizing it was love at first. The speaker admits to being foolish for liking the person first and getting caught up in their charm. The song expresses the desire for the person they like to notice them and pay attention to their feelings. The lyrics ask the person to look only at the speaker and see their heart trembling with affection. The metaphor of a "shiny boy" and a "misty boy" is used to describe the appeal and mysteriousness of the person the speaker is attracted to. They want to be taken away into a sweet and secret dream-like world with this person. The lyrics also touch upon the speaker's wish for the person to confess their feelings confidently and without hesitation. They encourage the person to be genuine and masculine when expressing their emotions. The song portrays the speaker's romantic and hopeful sentiments, comparing the feeling of being in love to an exciting and breathtaking experience. They ask for the person to tell them they like them repeatedly and compare their story to a beautiful old movie. Overall, "Shiny Boy" is a song about the excitement, uncertainty, and longing that comes with falling in love and wanting the person you like to reciprocate those feelings.