Where's the EU?

So I work in a duty free shop in an airport.

We sell a lot of alcohol, at some pretty good prices. With just one catch.

To buy alcohol anywhere in the EU, you have to pay duty. It's just the law.

However, since we also have flights travelling outside the EU, we do sell the duty free kind - but you have to flying to certain countries to buy it. This invariably leads to all sorts of ranty moaning about how 'we bought it at this price last time' or 'Poland's not in the EU - they don't use the Euro'. (to which the standard response is 'neither do we, and we're in the EU'. That spins them right out.)

The other night we had a bloke in trying to buy alcohol. Wasn't sure what he was allowed. The conversation went something like this:

"Am I travelling outside the EU?"

"I don't know. Where are you going to?"

"Newcastle."

*facepalm*