I lived in Lincoln for 12 years so I have a feeling we are probably the inverse of each other. MOST people are able to enjoy a casual back and forth and think it's just good hearted trash talk. I am dead set that 1 of 2 things happens when you move to a different "culture." You either acclimate or you become very set in your heritage. It's all good fun, they are 18-20 year olds. My brother in law is a former Nebraska baseball player and he and I have some of the funniest, brutal, debates you can imagine but at the end of the day we just love our programs. (Though he was a transplant and pays way more attention to the Vikings now compared to when we first met.)
My favorite one was: you know what IOWA stands for right?
I would respond "It's Ohio Without A$$holes" and they would look at me bewildered.