The UT partisans converted the 13 into a B, the hyphen into an e and inserted a V in front of the zero. That spelled Bevo, the brand name of a popular near beer.

Varsity's name was then changed to Bevo when A&M branded 13-0 on him after an A&M win. the 13=B, the -=E, snuck a V in there 0=O...BEVO.

Varsity was actually the name before Bevo. Hence, saw Varsity's horns off.