Pop... soda... or coke? What do you call it? Turns out, these terms are truly regional. Fortunately for us, someone took the time to find this out.
A county-by-county breakdown.
(I stared at this for a good five minutes. I'm not sure why.)
"And I am a writer, writer of fictions / I am the heart that you call home / And I've written pages upon pages / trying to rid you from my bones..." -- "The Engine Driver" by The Decemberists