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?
- Would you like to have a small bet with me, Pamela Stuart?
- You shut yer mouth, young fella! Or I'll shut it for ye. For good!
- Here, what are we stopping for?
- Sheep. A whole flock of them across the road!
- Well, blow your horn. Maybe that'll scare 'em.
- Stubborn beasts! They won't move an inch.
[...]