The beauty of children is that they have no fear and thus, can hold any sort of conversation they want.
Take my three-year-old daughter for example. Natural curiousity along with an opening to educate her appropriately (be a lady) resulted in the following conversation:
E: Where’s your chest?
Me: Under my shirt.
E: (Looking down her shirt) My chest is under my shirt too.
Me: Yes, and we don’t show people our chest. We keep it covered with the shirt.