Here's an Alpoish question that occurred to me a half-hour ago as I stood in line at the local drive-in. This is an old traditional drive-in, not a chain, and is the same as it was when I was in high school over 55 years ago.
The guy ahead of me orders "a double cheeseburger, a cherry milkshake, and an order of fries." He doesn't say "an order of cheeseburger" or "an order of cherry milkshake". But he says "an order of fries", even though all of them are orders. Why not just say "fries" as part of his order. Would that be confusing? Don't see how....