These schools each have roots in agricultural science and have therefore adopted the Aggie as their athletic mascot. What an Aggie is varies depending on the school. Texas A & M has a Collie dog named Reveille as it's mascot. Utah State University uses a bull which they call Big Blue. New Mexico State has a cowboy named Pistol Pete.
An Aggie from Texas A&M probably knows a thing or two about massive bonfires.
Derived from the Ag of Agricultural & Mechanical commonly associated with universities established under the Morrill Act of July 2, 1862.
"He's driving a Ferrari, has two supermodels, and lives in a 20,000 sq ft house, all while maintaining a friendly attitude"