A townie (UK countryside slang) is a person from a town or a city.
Symptoms of this disease include being horrified that you've named the turkey that you're fattening up up for Christmas dinner, calling a cow a bull and not knowing what a heifer is.
This is a disease can be cured by living in the countryside for two years, and making yourself look like an arse to the amusement of every other country dweller.
Farmer Dai: Did you see that group of Londoners come into the pub earlier?
Farmer Arthur: I tell you what those bloody Townies do my head in.