I'm a Midwesterner who used to live in Northern Illinois, but now lives in Central Illinois….. So I guess it's safe to say that I have an upper midwestern accent or something. I pronounce things lazily and informally, saying things like "Didja eat?" "Didya eat?" or "Did yih eat?" Instead of "Did you eat?" The "or" sound is sometimes pronounced as "er" (ferever" instead of "forever" "yer" instead of "your"). I also tend to fuse words together. "Have to" becomes "hafta" or "havta", "going to" is "gonna"…
Though…. Despite being in the Midwest….. I call what some might call "pop", "soda". And everyone around me calls it "soda" too. So it's really weird when I see all these Midwesterners on the internet swearing on their mother's that "It's pop! Not soda!", but I'm a Midwesterner and everyone says soda. I also don't pronounce aunt as "ant", but everyone else says "ant", so that's not as weird to me.