What's up

I had a hilarious conversation with my nephew the night before last. Everytime I talk to him he has something different for me. This time he got on the phone and said, "Hey... What's up..." I laughed so hard. He started laughing and I could hear my sister laughing in the background. Where do kids come up with this stuff? I had him do it to K, too.
After that, I asked him who loves him. He always says "Mommy". I replied, "and Auntie" and he came back with "and Uncle K". Of course, I laughed again.
I am so blown away at how kids grow up so fast. It seems like just yesterday I was waiting for him to be brought into my sister's hospital room so I could be the first to hold him.
I can only imagine the conversations we are going to have as he gets older. That kid is something else.