Actually, I think the fans in Lincoln are pretty friendly. We've been to the last two ISU games there, and we're treated great. The same in Colorado, Mizzou, K State, but not so in Iowa City.
And if I was going to make up a story, I would have embellished it by saying they had on Hawk shirts, caps and were singing the fight song. I didn't do that.
No one had said that you're making it up. The issue is that you assumed the two were Iowa fans simply because of something they said to you, even though you've got nothing in the way of evidence to back up that claim.
Then again, this is a message board; had you said they were wearing Iowa shirts, it would have been taken as the gospel.