Carlin, born at 9 lbs and 12 oz, 21 inches long, to Chris and Mackenzie.
Mackenzie is Patti's daughter, and while I am not married to her (yet), I've become part of her family and so where Patti is now Nana, I am Opa.
Patti and I were walking through Old Town Spring here in Houston a while back, in a Bavarian shop, and I saw the word Opa on a little gray-haired man doll. I am German in my heritage (born to the Rademacher and Arnswald clans) and so some time later, Patti asked me what I would be called when the baby arrived.
"What do you mean?"
"Like, Grandpa? Papa? I'll be Nana."
"Hmm... never really thought about it."
Later that day, I chose Opa. It's German for Grandpa. It's unique. And I've always wanted my own afternoon talk show.
So Carlin came to be after a trouble-free birth, and everyone is fine. And me... I'm Opa.
ETC: And a picture of the happy family: