No, it's not a joke. Christian Leblanc visited an elephant sanctuary in Thailand a couple of months ago, fed the elephants bananas, and found the elephant grabbing his Go-Pro camera, which was set on time lapse.
As a result, while the elephant continued to play with the camera, the camera continued to take pictures, of Leblanc, himself, and more. Camera retrieved, pictures posted on Facebook. The Telegraph (UK) has MORE that will make you laugh.