An excellent idea. I'm always interested in good wines. Like a small boy looking at expensive bicycles.

9 seconds sound clip from Batman (1966) - A Riddle a Day Keeps the Riddler Away (S1E11) TV Series.

You can hear this line at 00:13:55 in the Blu-ray version of the movie.

Quote context

[...]

- Value was not the object. It's friendship that counts and admiration for your great country.

- To America!

- Mmm! What a delicious wine Ho ho. Marvelous bouquet.

- The Royal Mushroom Club has some of the finest wines in the world. Right, Mr. Ambassador?

- Yes. Fine vintages and rare years indeed.

- Begging your pardon, Mr. Ambassador, but we're every proud of our wine cellar. Perhaps His Majesty would like a tour?

- An excellent idea. I'm always interested in good wines. Like a small boy looking at expensive bicycles.

- Well then, let me lead the way.

- Batman! Robin!

- Trouble or pleasure?

- We're not sure yet.

- Is King Boris visiting here tonight?

- Why, yes. He just went for a tour of our wine cellar.

[...]