Question: What would a Minecraft Melon look like in real life?

Answer: It would look like this…

This is a square watermelon. Well… not exactly a square, it's more of a cube. It's like a watermelon grown into the shape of a cube like I said. Square watermelons are common in Japan, but they are purely ornamental and are often very expensive, with prices as high as ¥10,000 (about $100).