The bang!

Hey Fred...
What!
Did you hear that bang?
Yeah! What do you think it was?
Dunno.... it came from the railway line...
Let’s go and see...
...
Hey Fred!
What!
The train is not moving...
I can see that! Hasn’t it stopped at the station?
Don’t think so... it’s stopped before the pavement.... What station is that?
Lintley Halt...
Well, they don’t call it that for nothing, you know....
Do you think you’re funny?
Yes! Baa ha ha ha!