I don't even know if I had a generalised term like soda or pahhp, I think me and everyone I know has always just referred to it by a brand name, even if we didn't end up getting that brand of drink. Usually coke, keeping it real. (Also don't understand people that say cola, cola people are the worst, like people that use Summer and Winter as verbs).
I always said (haunt) - aunt, probably a product of a southern English childhood though, I imagine (ant) - aunt is indeed more commonly accepted in the U.S.
There's a German person where I work that has a viciously strong German accent, he's from one of the islands between Germany and Denmark (Germany has islands, who knew?) and both him, his older brother, and his brother's friendo all have the stereotypical German-English pronunciations. He always says "the thing is" as kind of a habitual go-to phrase, and when his German friendos come over they're all like "ze sing is!", and don't get me started on trying to differentiate between "veggies" and wedges.
Oh man, Minnesota is like the lost part of Canada. Maybe they should just split Alaska from the Yukon and wheel Minnesota over there.