Fun!

Can you spot the ad-lib in the following exchange from Guys and Dolls?

NATHAN: I went over to the Biltmore garage--talked to Joey Biltmore himself. He says he might take a chance and let me use the place, if I give him a thousand bucks.
BENNY: A thousand bucks?!?
NATHAN: In cash. He won't take my marker.
BENNY: Your marker's no good, huh?
NATHAN: What do you mean? A marker ain't just a piece of paper that says I.O.U. one thousand dollars, signed Nathan Detroit--a marker is like a pledge, which a guy can't welch on it. It's like taking flash photos during a stage play, or not saluting the flag. My marker is as good as anybody's, only Joey Biltmore don't think so. It don't seem possible. Me without a livelihood. Why, I been runnin' the crap game ever since I was a juvenile delinquent.

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Finished Harry Potter yesterday. Was pleased that the spoilers I'd inadvertently read online turned out to not be true.