- I'll show you how it works.
- Sir, I don't know if this is necessary.

5 seconds sound clip from the The Lego Movie (2014) movie soundboard.

You can hear this line at 00:24:28 in the Blu-ray version of the movie.

Quote context

[...]

- But I have a way to fix that. A way to keep things exactly the way they are supposed to be. Permanently.

- Behold the most powerful weapon of all the relics: The Kragle!

- As you can see, they're loading the Kragle in a big machine upstairs.

- I call it the Tentacle Arm Kragle Outside Sprayer. Or TAKOS. The S is silent.

- So on Taco Tuesday it's going to spray the Kragle over everyone and everything with a bunch of super-scary nozzles like this one!

- I'll show you how it works.

- Sir, I don't know if this is necessary.

- Oh, don't worry. I won't test it on you. I'll do it on your parents!

- What? (3)

- Hi, son.

- Hi!

- How's it going in the big city?

- Mommy. Daddy. What are you doing here?

[...]