No, it's not an Alabama fan who lost the bet. It's Calvin and he's a lifelong Aggie. Why would an Aggie bet against his own team winning and then actually follow through on the bet? Good question.
But someone needed to tell Calvin that he put the apostrophe in "12'" in the wrong place. Oops. It's not like it's permanent or anything.
But the line of the story when A&M went up by 20 and it looked like they had a real shot at beating 'Bama: "Oh, crap, I bet an ass tattoo about this."