According to Wikipedia, it all started with a couple vacationing in Banff National Park in Alberta, Canada. While the couple were posing on some rocks next to a lake using a camera with a wireless remote shutter release to take photos of themselves, a Golden-Mantled Ground Squirrel began exploring the area. The squirrel stood up right in front of the lens, and the couple was able to capture the image of the squirrel, clearly in focus, in front of the camera, as seen in the picture below:
Actual, original photo of Crasher Squirrel
However…
The photo spawned an internet phenomenon of some of the worst photo-shopped images (some of which are hilarious) ever to appear on the World Wide Web. See for yourself:
Be sure to scroll down to see all of Page 1 (let alone links to the 49 additional pages), and, if you’re so inclined, to create your very own poorly photo-shopped picture of Crasher Squirrel!