These flowers are certainly...
5 seconds sound clip from Batman (1966) - A Riddle a Day Keeps the Riddler Away (S1E11) TV Series.
You can hear this line at 00:01:14 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, uh... May I take that for you?
- Your Majesty... On behalf of the Welcoming Committee, I'd like to present you with these roses.
- Well, thank you, young lady. Thank you very much.
- Shy little thing, isn't she?
- These flowers are certainly...
- Make anything out of it, Chief O'Hara?
- And what will those tricks be, chief?
- When is a person like a piece of wood? What does it mean?
- I wish I knew, commissioner. I wish I knew.
[...]