U.S. study

How do you say it?
We do tend to take our local "dialects" for granted, until we go out of town, or an out-of-towner comes around. Around here, it's exclusively "coke". I go over to someone's house, they ask "you want a coke?"...and I reply "sure, what kind you got?"
But I guess especially "pop" is the most foreign here...you'll get a strange look saying that round here.