"Show them the finger, babe."
I was absolutely flabbergasted when that scene came up. When the announcer first says "show them the finger, babe" I thought the lady on the horse was going to do something else (I kept thinking censorship code existed at the time that would prevent the movie from showing the finger), but she actually goes and gives the audience the finger! I literally said HOLY *beep* at the screen and started laughing for like a minute.
I mean, if that scene was done today I wouldn't be so surprised. But seeing as how the movie was made in 1937 I was shocked. This was the era where you couldn't show two married people sleeping in the same bed...