French race walker (wut?) Yohann Diniz was leading the 50k race when he started having problems. He started shitting his pants. Hot, nasty diarrhea. People handed him sponges to stuff in the back of his shorts, but that didn't help. And when they soaked up as much as they could, he would throw them on the side of the course where people were standing.
The squirts got the best of him, though... He collapsed from dehydration, covered in his own shit. As if being a race walker wasn't embarrassing enough. But he did get up and finish the race.
http://screengrabber.deadspin.com/race-walk-leader-appears-to-be-having-poop-problems-1785499773