on grammar

A voice from the room called up to Psmith.
'Say!'
'You have our ear,' said Psmith.
'What's that?'
'I said you had our ear.'
'Are youse stiffs comin' down off out of dat roof?'
'Would you mind repeating that remark?'
'Are youse guys goin' to quit off out of dat roof?'
'Your grammar is perfectly beastly,' said Psmith severely.
'Hey!'
'Well?'
[psmith journalist]