alt Hacker NewsContext clues matter--note that we're both talking about Aggies and that tu is lower-cased.
They do that to imply that "varsity" is not the University _of_ Texas.
As with lots of things coming from College Station, you just sort of have to accept it.
I live 45 minutes from A&M. I’ll repeat myself. No one in Texas calls it tu. ;)
There may be some disenfranchised barbarians out in the wilderness that do. But likely only due to their extremely tenuous grasp of the fundamentals of English. Primarily they communicate through grunts and hand signs.