> FYI, I live near Philadelphia, but everyone here calls it "Philly", and
> there are even companies that use the name like "Philly Pretzel
> Company", http://www.phillysoftpretzelfactory.com/pretzelstory.html. I
> don't call it "Philly" when I am out of the country because few people
> recognize it outside the USA.
Yes, you do. You may try not to, and you may do it less, but you certainly do. Which just proves the force of habit.
/Magnus