A pint and a half, or a pint in a half

I was in a busy pub in central London last night and went up to the bar to buy a couple of drinks.

"A pint and a half of Coors*, please," I said to the barman.

He went off to start pouring the drinks and then came back to ask me: "Was that a pint and a half, or a pint in a half?"

A pint in a half? A half in a pint (glass), possibly, but not the other way round. I would have liked to see him try, though.


*Just to clarify - I don't normally drink this watery, bland lager.