During today's game between the Mets and the Cardinals, Daniel Murphy stepped up to bat, as baseball players are wont to do, and hit it deep into right field. The ball looked like it could clear the fence or bounce off it. It did neither.
Somehow, the ball found a seam between two wall segments and disappeared through it.
Here's another angle that even better shows how improbable this was. Because it didn't clear the wall on the fly but did leave the park, the hit was counted a ground-rule double.
Take a look at the video, in case you still don’t believe your overstimulated eyes.