Oh, no, it's too silly.
3 seconds sound clip from the Desk Set (1957) movie soundboard.
You can hear this line at 00:36:07 in the Blu-ray version of the movie.
Quote context
[...]
- How was this conclusion possible?
- Yeah, well, the only thing I'm assuming is that, uh,
- Hey. Were Harry and Grace...
- Were Harry and Grace goldfish?
- No. They weren't. They were rare tropical fish. Like you.
- How did your machine do on this test?
- How'd you happen to ask that question?
[...]