You sure take the cake for persistence.
5 seconds sound clip from the The Big Knife (1955) movie soundboard.
You can hear this line at 00:08:56 in the Blu-ray version of the movie.
Quote context
[...]
- You know there's innate power in the world, Bud, needs publicity.
- What laundries do to sheets and pillowcases. Every month I buy a dozen.
- Why don't you try the May Company?
- They sell a fine percale sheet at a really modest price.
- You sure take the cake for persistence.
- We're all sensible, sophisticated people. There's no use wearing crepe.
- You know, you may be right. However, I find it sad.
- And our personal life is not your affair.
- And you're the child who'll tell me.
[...]