My Peanut is going through the "what's that?" phase right now, which means we tell her the name of body parts, objects, and food about 50 times a day. Today she pointed to her butt and said "What's that?" I said "Butt" and she laughed. She thought it was hilarious.
In school kids would say the word butt over and over again and make farting noises with their mouth, and I thought it was because of siblings or parents encouraging it. Apparently, it's not a learned behavior.. it's a natural one.
Oh boy. Or girl, I should say.