Sean was sitting next to me on the couch... he looked over at me and noticed my chest. He said, "Mommy, you've got big elbows" as he pointed to my boobs. I've got what?
"You've got big elbows."
"Those aren't my elbows, those are my boobs. Girls have big boobs (not all, but I didn't want to go there)"
"You've got big boobs... and you have little elbows. Girls have big boobs and little elbows... boys have big elbows and... runny noses."
Poor Sean's nose has been running all day!