"Strong-taste" picture books, letting kids fully indulge in the "fun" of poop, pee, and bodily functions

Kids saying "poop, pee, potty" is not serious at all—it's just a normal little phase in their development. Besides exploring their own "poop, pee, potty," they also love saying words related to them. This happens because children have entered what's known as the "dirty words sensitive period" (also called the "curse-sensitive period"). It's completely natural and necessary for kids to go through …