That's just plain silly. Of course it's directed at the other team. As I've mentioned before, there is a very long standing tradition at UW in all sports of spending greatly inordinate amounts of time tearing down the other team as opposed to cheering their own. I've personally witnessed this in football, hockey and basketball on numerous occasions as far back as the 60s and I'd make a bet the tradition is well older than that. Some of this behavior is normal and expected, but perhaps during the National Anthem, all through the game, and especially after every minor mistake ("U f'd up" or the hockey version "sieve, sieve, sieve") on the part of the opponent--though TCU made darn few even minor mistakes!--is a bit much.
It may be tradition, but it's a very classless one when so overdone.
The e/s, f/u chant is, in fact, between sections in the student section and not directed at opponents. I accept TCU derision against UW fan behavior because they was EXCEPTIONALLY decent at the RB, but not from some displaced Minnesota fan. I've sat in many a Minnesota home game to hear "overrated" or "na na na na, hey hey hey, good bye" to believe for a second UM has some kind of higher moral ground.
I wish our student section handled the sportsmanship better than they do. Since we sell out everything with locals (unlike UM that has most of thier UW/UM home games filled with Badger fans) we have learned some really bad habits.