Nowhere does this strange football dreamworld burst more vividly than after midnight at Prime 47. Jerry Jones announces his presence inside the swank steakhouse and bar with the monument to tackiness parked outside: his full-size bus, painted white with the Dallas Cowboys star splashed all over, flashers on, ESPN on two flat screens inside, visible from the sidewalk. The JerryMobile will sometimes crawl a few blocks, park outside another establishment and declare the latest spot to party. Mostly, late at night, it’s stationed outside Prime 47….