2010 Darwin awards:

AND THE WINNER IS…
Zookeeper Friedrich Riesfeldt ( Paderborn , Germany ) fed his constipated elephant 22 doses of animal laxative and more than a bushel of berries, figs and prunes before the plugged-up pachyderm finally got relief. Investigators say ill-fated Friedrich, 46, was attempting to give the ailing elephant an olive oil enema when the relieved beast unloaded.
The sheer force of the elephant’s unexpected defecation knocked Mr. Riesfeldt to the ground where he struck his head on a rock as the elephant continued to evacuate 200 pounds of dung on top of him.
It seems to be just one of those freak accidents that proves…. ’shit happens’  source