"Bless You, Baby Girl!"
Bubba either calls his baby sister "baby girl" or "baby Charli". I think he thinks that the "baby" part is actually part of her name.
Anyways, the other day she coughed and tooted at the same time. (She's still trying to figure out how to control all her bodily functions at once) Jack was in the middle of playing with his action figures and overheard the 2 noises from across the room. And without looking up or even pausing in his actions, he said, "Bless you, baby girl!"
We're still trying to teach him which polite responses go with which bodily functions.