And how do we know this? Because his shirt is an obvious nod to his small town Burlington, Wisconsin roots. See, what the Cowboys QB is saying by wearing this t-shirt is:

“You might think I’ve gone Hollywood because I’m playing the most popular position on the most popular team in the most popular sport in the country. And you might think I’ve got a big head because my girl, Jessica Simpson, is sexy and hot and in one of her movie roles, she played the part of Daisy Duke [ed. with aplomb, it should be noted], who was an iconic symbol of the 80s. But I’m keeping it real in the Hooisers t-shirt because that’s who I really am. I like karaoke, football, and breasts. Large, heaving bosoms.”

Jessica’s shirt? Not sure if she’s mocking those silly vegans like Alicia Silverstone or if she’s speaking in code about something else.