You know what this means, don't you?
4 seconds sound clip from Batman (1966) - Hi Diddle Riddle (S1E1) TV Series.
You can hear this line at 00:01:56 in the Blu-ray version of the episode.
Quote context
[...]
- But there is a small ceremony.
- Hey look! Look what shot from that cake.
- Why is an orange like a bell?
- You know what this means, don't you?
- That infernal prince of puzzlers who's outwitted us a dozen times.
- What about it, men? Any of you think you can handle him?
- I don't know who is behind that mask of his, but I do know when we need him. And we need him now.
[...]