1920. For the first two weeks of the year men can still get a drink more or less publicly because although the 18th Amendment is in effect, the law has no teeth.
12 seconds sound clip from the The Roaring Twenties (1939) movie soundboard.
You can hear this line at 00:20:39 in the DVD version of the movie.
Quote context
[...]
- I'll call you. In about two or three years, when you get to be a great big girl.
- Bye.
- You should've stayed and helped her with her homework.
- The word speakeasy begins to appear in our language.
- Say, will you do me a favor?
[...]