"Man of Steel" trailer confims it - Superman is a Jayhawk
I've long suspected it but the latest trailer for Man of Steel makes it plain - Superman is a University of Kansas Jayhawks fan. It makes a lot of sense. Clark Kent is from Smallville, Kansas, and look at his costume - crimson and blue, anyone? Not to mention his fine upstanding character. I'm not sure if the film will allude to Superman actually attending KU - he looks too busy saving the world to have spent much time on campus - but I'm pretty confident I know who he roots for when March Madness rolls around. I wonder if Ma or Pa Kent are alumni.
Here's the screen shot from the trailer that proves it, from around the 2:20 - 2:21 mark. Don't blink or you'll miss it. The film from director Zack Snyder (300) and producer Christopher Nolan (The Dark Knight) opens June 14, 2013.