Quote from Barney in The Stinsons
Barney: I hired an actress to play my fiancee "Betty". Her real name's Margaret. She mostly does off-Broadway theater. Wonderful actress. This close to a Tony. It's all who you know. It's very political. I shouldn't get into it. But there's one problem. Betty has a slight tendency to go off-book. [flashback:] Barney: You see, Mom? I found someone who makes me happy. Just like you wanted. Loretta: That's wonderful. I just wish I could've stuck around long enough for grandchildren. Margaret: I'm pregnant! [laughs] Huh?