Well, how can we dress this one up. There are no prizes for guessing what this creature is called. Can you figure it out? That's right, it's the atretochoana eiselti. We're kidding; that's its scientific name. Everybody else in the world calls it the penis snake, and it's entirely obvious where it gets its name from. If you uploaded this picture on social media, you'd probably get your account suspended!
If you're laughing at the penis snake though, be aware that it's also laughing at you. It's not actually a snake at all; it's a limbless amphibian, rather than being a reptile. Not only that, it's the largest tetrapod that doesn't have lungs; it absorbs oxygen through its skin. For over a century, the only known examples of the species were two samples that explorer Sir Graham Hales brought back from Brazil in the 1800s, but more recently we found it again in the wild, in 2011.