Or even worse, poop it! I bet you have!” he laughed, and quickly the poor girl began to wet and mess her diaper to her dismay. Her eyes began to water so she. Apr 24, - Welcome to the world of 'adult babies,' where people dress like babies, act like babies, and joyfully poop themselves like babies. it's a brick wall," she says. "Like, 'Okay, this is little time, I don't want to be a big girl.'".