Railway Conversation

He said, nonchalant
'Don't expect riches'
I said, aghast
'I'm in it for the Art!'
He said, apologetic
'Don't blow a gasket'
I said, offended
'Do you take me for a toff?'

He was silent
Then said
'Why do you do it then?'
I stepped back a bit
Then said
'Piss off!'