You shut yer mouth, young fella! Or I'll shut it for ye. For good!

6 seconds sound clip from the The 39 Steps (1937) classic radio play.

You can hear this line at 00:28:55 in the radio play.

Quote context

[...]

- Well, it's the real head we're going to see. The Sheriff Principal. Eh, Joe?

- Aye, the Sheriff Principal.

- I don't understand.

- Would you like to have a small bet with me, Pamela Stuart?

- Now, what do you mean?

- I'll bet you a hundred to one that the man they call the Sheriff Principal has the top joint of his little finger missing. Am I right, gentlemen?

- You shut yer mouth, young fella! Or I'll shut it for ye. For good!

- Ah, you see, Pamela? I win.

- They're taking us to your old friend, the Professor. Charming gentleman, the Professor. Best-liked man in the village and a personal friend...

- Oh, be quiet, will you?

- Here, what are we stopping for?

- Sheep. A whole flock of them across the road!

[...]