Then flash forward to when Mr. Boy is 4 and we are sitting in the doctor's office reviewing his allergy test results. The doctor shows off the list of allergens, and it's identical to mine. I mention to the doctor, "oh, this is easy, these are all the same trees I'm highly allergic to." He says, "Oh yes.. well that makes sense, we find that allergies run in families, more on the maternal side.... but... wait...erm... uh.. wait.. no wait, that doesn't make sense in your case." Then he just kind of smiles and says, "well, I've just witnessed another the miracle of adoption, these kids, they tend to morph."
Sidenote: One day we were over at a friends house whom we had given an identical Elephant Friend to when their son was born. Nathan opened the closet to get a toy, and saw Elephant Friend in there, and exclaimed "Elephant Friend, WHAT are you doing HERE!?"