I know how that is, My ex's family referes to dinner or tea as a meal. I know that in itself does not sound confusing, but when we were invited out he would say we've been invited out for a meal, i'd have to then work out if is was breakfast, lunch or dinner.
They also refer to a sandwich as a double, because it has two slices of bread. Two sandwiches was two doubles and a sandwich was jus one piece of bread with topping. They're dutch, any othe Dutch families call sandwiches the same thing.
Oh yeah, Laura you can come and bring your yorksire puddings.