The shirt reads: "We may be new to the conf but we aren't new to the game"
Apparently they are new to geography too as the state of NC is included on the shirt.
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Kinda reminds me of an old Aggie Joke that needs updating, "Did you hear about the Aggie that moved to Oklahoma, yeah turns out he raised the IQ of both states."
A 2012 update is in order, "Did you hear about the Aggies move to the SEC, turns out they actually lowered the IQ of the SEC!