>"Surname" would be better.
>
>What's your last name?
>Surname.
>Ok, ok. What's your surname?

Our local edible oil factory (local factory of edible oil, NOT factory of any local oil) produces (*) a margarine named "Good morning". A guy comes to the counter and says

- Got margarine?
- "Good morning".
- Good morning, do you have margarine, please?


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(*) why do you still use "manufacture" for industrial production, when that means "make by hand"?