George Bailey: Mary Hatch, why in the world did you ever marry a guy like me?
Mary: To keep from being an old maid!
George Bailey: You could have married Sam Wainright, or anybody else in town...
Mary: I didn't want to marry anybody else in town. I want my baby to look like you.
George Bailey: You didn't even have a honeymoon. I promised you...
[stops]
George Bailey: Your what?
Mary: My baby!
George Bailey: [stuttering] Your, your, your, ba- Mary, you on the nest?
Mary: George Baily Lassos Stork!
George Bailey: [still stuttering] Lassos a stork?
[Mary nods]
George Bailey: What're'ya... You mean you're... What is it, a boy or a girl?
Mary: [nods enthusiasticly] Mmmm-hmmm!