Sharting while running outdoors, or frantically shuffling to the restroom, leaving a trail of shit you can follow back to where you came from, if need be.
"Dude! Coach ran me so hard at practice that I left a Hansel and Gretel all the way from the field house."
"Bill ate tacos for lunch and within 10 mins, he had Hansel and Greteled a path from his desk to the bathroom"
A class of excrement which leaves a telltale spiral trail around the toilet bowl as it drains, so that it might find its way back home.
The janitor went through 3cans of AJAX in an attempt to remove a particularly stubborn hansel and gretel trail from the new porcelain White House toilet.