A man in China has been riding the subway wearing a watermelon on his head, and it has caused police to ask, “Have you seen watermelon brother?” The man now known as "watermelon brother” has been spotted multiple times on metro lines in Beijing, and he is creeping people out. Chinese social media is somewhat obsessed with him, and police have even brought him in for questioning. But so far no one has been able to get him to answer the question: "Dude, what's with your watermelon head?"