Suddenly he starts shouting "F*** You!... Yeah You!"
He bangs on the window.
People start to look round.
And they each get the same response.

His reasoning? :
"What are people gonna do if you say it to them?
Nothing! They are scared of you."

The guy with him stays as quiet as possible.

His attention turns back to the train man.
The same words repeated.

Then he says it:
"I just got out of prison today - What you gonna do?
Send me back?"

And sure enough the police turned up.