Sean from Melbourne sez, "This, believe it or not, is a citrus fruit that I have dubbed Cthulhu lemon. Ok, we did the eyes. But the tentacles at the bottom are natural."
Update: Xeni has also been touched by his lemony, noodly, horrible, horrible appendage. She points out that nonbelievers call this Buddha's Hand Citron.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.