From 1984 by George Orwell:
'I arst you civil enough, didn't I?' said the old man, straightening his shoulders pugnaciously. 'You telling me you ain't got a pint mug in the 'ole bleeding boozer?''And what in hell's name is a pint?' said the barman, leaning forward with the tips of his fingers on the counter.
'Ark at 'im! Calls 'isself a barman and don't know what a pint is! Why, a pint's the 'alf of a quart, and there's four quarts to the gallon. 'Ave to teach you the A, B, C next.'
'Never heard of 'em,' said the barman shortly. 'Litre and half litre -- that's all we serve. There's the glasses on the shelf in front of you.
'I likes a pint,' persisted the old man. 'You could 'a drawed me off a pint easy enough. We didn't 'ave these bleeding litres when I was a young man.'
I had forgotten that bit of dialog from 1984. Thanks, very appropriate to our times.