Of the ideas posted so far, I like "Carry the fight" and "Down the field" the best, because they're unique to Tennessee. The Tenness-EEEEEEE thing gets points for creativity, but I don't know. I could easily imagine that sounding like a bunch of squealing girls, if it's not done right -- like "WEE!" It sounds like the kind of thing I would laugh at if rival fans did it.
There's got to be another Lil Jon song we can rip off.