Originally Posted By: hybrid8
I use "app" for appetizer when I'm at a restaurant. wink I'm not sure if I picked it up when I worked at a restaurant in 1988 or later.

Must be some sort of weird Canadian slang wink

But seriously, I've never heard anyone I've dined with use that abbreviation. I'm not saying nobody says it, I'm just telling you that I've never heard it. Perhaps it's a regional thing, like soda/pop.
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Matt