I've never seen a funnier mystery than Minecraft's potato confusion

There are some mysteries in videogames that are exciting; that get players crafting theories and discussing in forums. Who is the enigmatic G-Man in Half-life? Where is Raxxla in Elite Dangerous? What the heck is a jacket potato? That's the question bothering Minecraft players right now, and it's started discussions to rival those surrounding Herobrine and the Nether Realm. But how did it all start, and what are the answers? It may seem obvious to some players, but for many, it's a tuberous mystery of epic proportions.