Stand straight! Stomachs in! Shoulders back!

2 seconds sound clip from the Matilda (1996) movie soundboard.

You can hear this line at 01:22:24.965 in the Blu-ray version of the movie.

Quote context

[...]

- A child came to my house. I don't know how, I don't know when, I don't know why.

- Miss Trunchbull, may I...?

- No, you may not.

- But I know a child came.

- So did you know it was illegal to enter someone's home without their permission?

- Yes, Miss Trunchbull.

- Sir.

- Stand straight! Stomachs in! Shoulders back!

- Do any of you recognize this?

- Let's play a game, shall we?

- Who was wearing a pretty red hair ribbon yesterday and isn't wearing one today? Can you answer me that?

- Who does this disgusting ribbon belong to?

[...]