The song "Happy" by Hard-Fi is about the concept of happiness and how some people seem to be constantly unhappy or full of negativity. The lyrics suggest that the narrator is observing someone who is always caught up in criticism, spitefulness, and finding faults in others. The song questions whether this person ever feels happy or content, suggesting that their behavior is not right and that it's sad to live in such a negative mindset. The lyrics encourage them to lighten up and find reasons to smile. The song captures the frustration of witnessing someone constantly tearing others down and never experiencing joy themselves. It emphasizes the importance of being positive and spreading happiness instead of dwelling on negativity. Overall, "Happy" is a commentary on the harmful effects of a negative and critical mindset and reminds listeners to prioritize happiness and kindness towards others.