Barney: It's not too late to back out of this stupid marriage thing! You don't have to do this, bro!
James: Yes, I do.
Barney: Why?!
James: Because Tom and I are gonna have a baby.
Barney: What? There's gonna be a baby?
James: Yes. We're adopting.
Barney: Oh, my God. I'm gonna be an uncle?
James: For the rest of your life.
Future Ted: [v.o.] And that's how Barney became Uncle Barney. A year later, at James's wedding, Barney could not have been more proud.
Barney: To James and Tom. May you have a long and happy life together. And may I always have the skin and libido of a much younger man. Cheers.