And that's exactly what it is (a wooden Batplane, we mean -- not the foreskin thing). Inventor and engineer Clement Ader is best remembered by history for improving the design of Alexander Graham Bell's telephone, and slightly less well known for being a turn-of-the-century alternate history Batman.
Ader's first attempt at a functioning flying machine (no, this wasn't a fluke. Ader was all about two things: building bat-shaped flying machines and inspiring terror in his enemies), which he called the Eole, had a 45-foot wingspan and was powered by a steam engine, which is the equivalent of attempting to power a race car with positive thinking. Despite the meager power supply, however, in 1890 the Eole was able to travel 165 feet and achieved some sweet air, reaching a maximum altitude of 8 inches. That may seem like nothing, but it was the first time a manned, engine-powered flying machine ever got off the ground, technically making Ader the world's first pilot, and technically making the world's first airplane a Batplane.
Via Wikimedia Commons
"Let's hover in front of the full moon and just freak everyone out."
He upped the Bat-ante with his next design, a gas-engine model called the Avion III (pictured above). The only problems Ader saw with this design was that it was virtually impossible to steer and prone to terrifying the holy shit out of unsuspecting bats who thought they'd just met their God. Not letting a petty thing like "maneuverability" derail his quest to sit inside a giant bat while laughing maniacally, Ader outfitted the Avion III with propeller blades that worked to stabilize and steer the craft. The advent of other aircraft that didn't look like they were designed by a 12-year-old boy with freshly murdered parents pretty much spelled the end for the Avion III -- but not before Ader allegedly conducted a test flight in 1897 that successfully flew 1,000 feet, prompting the Edwardian-era joker to abandon his ne'er-do-well shenanigans and surrender to the constabulary posthaste.
Via Wikimedia Commons
"I think I'll become a butler instead. What could possibly go wrong?"