"Get Cool" is a bright and playful B-side track from Stray Kids' extended play "I am YOU". The song features an upbeat and cheerful synth-pop sound, a departure from the group's often intense and powerful title tracks. Its lyrics deliver a positive message about letting go of worries and stress, suggesting that simply shaking it off and "getting cool" is the best way to handle difficult situations. The song showcases the group's versatile musical style and their ability to execute lighter, more whimsical concepts.