Context 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.

"tu" is a term of disrespect used by the students at Texas A&M University (Aggies).

A&M is the other very large public university system in Texas. So there is a small intra-state rivalry there.