I'm from the south, so mostly we either call everything it's name or call it a soft drink.

It's usually not an issue though, because 97% of the time if anyone asks the person if they want a coke or a soft drink the response is, "I'll have sweat tea." It's the south.

In certain areas of the "deeper" south everything thing is called a coke, so if you order one in a restaurant the server will ask, "What kind of coke?" You then specify mountain dew, dr. pepper, coke, pepsi, etc. This IS a real thing, as weird as it sounds. I've observed it many times, and it always makes me giggle.