Bumper to Bumper License Plate Analysis

I guess I will read compulsively anything in front of me. Today, I spent ten minutes behind a Toyota 4 Runner, license place "Attatud."

Hmmm...What mean they by this? A contraction for "'Ata boy attitude?" And then what next came to mind was probably not a connotation they were looking for. "Atta-tud." Somebody, somewhere on the Net is probably selling sick t-shirts with this guy's mug with the tag line of "Atta-tude".