Take things back to John Cena's days as the Doctor of Thuganomics with this Retro Beware of Dog T-shirt. It features a chain-link pattern with his iconic tagline along with a vicious bulldog on the back, letting everyone know that anyone who steps to the leader of the Cenation gets his bark and his bite. Grab this throwback tee before heading to the next WWE premium live event and enjoy a vintage take on your allegiance to John Cena that devout Universe members are sure to notice.