This is the real stuff. They can't fool me.
4 seconds sound clip from the The Roaring Twenties (1939) movie soundboard.
You can hear this line at 00:30:46 in the DVD version of the movie.
Quote context
[...]
- Oh, you don't say. No kidding.
- Well, you're not gonna make a sucker out of me. Nobody else is.
- I can make this tiger-sweat myself. I've got a bathtub too.
- This is the real stuff. They can't fool me.
- The hip flask becomes an integral part of the national scene at football games, in automobiles.
- But in the undercover liquor industry, crude stills make their appearance.
[...]