Oh god, dumb childhood memories come flooding back. I know I routinely ate mud as a toddler. I'd sit in the garden scoffing it down by the handful. Apparently this kept going up until I found a worm. It's not as much fun when your food is wriggling.
But I think the person who really wins the prize for this is my mother.
God, my mum was insane when she was a kid. According to several different sources, before she turned eleven my mum had: eaten slugs for a bet, broke her kneecap trying to cartwheel on a wall, tasted motor oil, taken her bedroom door off it's hinges and used it as a mud-sled, unpicked her shoes at every seam just for something to do, and (my favourite) set a wasps nest on fire. Flaming angry bees, quite literally.
I have weird parents...