Niners fans tailgate before the start of game against the Lions in San Francisco, Sept. 16, 2012. (AP Photo/Marcio Jose Sanchez)

Fans tailgate outside LP Field before a game between the Titans and Patriots, Sept. 9, 2012, in Nashville, Tenn. (AP Photo/Mark Humphrey)

Dolphins faithful pose for a photo before the start of a game between Miami and the Raiders, Sept. 16, 2012 in Miami. AP Photo/Wilfredo Lee)

Fans dance in the parking lot at Lambeau Field before a game between the Packers and 49ers, Sept. 9, 2012, in Green Bay, Wis. (AP Photo/Mike Roemer)

Raiders fans pose for a photo before the start of a game between the Dolphins and Raiders, Sept. 16, 2012 in Miami. AP Photo/Wilfredo Lee)

Fans get together before Packers and Bears game, Sept. 13, 2012, in Green Bay, Wis. (AP Photo/Mike Roemer)

Lions fans tailgate outside Candlestick Park before the start of a game against the 49ers in San Francisco, Sept. 16, 2012. (AP Photo/Marcio Jose Sanchez)

Table for two: Bills fans have a bite in the parking lot before a game against the Chiefs in Orchard Park, N.Y., Sept. 16, 2012. (AP Photo/Bill Wippert)

Rams fans barbeque outside the Edward Jones Dome before the start of a game against the Redskins, Sept. 16, 2012, in St. Louis. (AP Photo/Jeff Roberson)

Fans tailgate outside Lambeau Field before a game between the Packers and Bears, Sept. 13, 2012, in Green Bay, Wis. (AP Photo/Jeffrey Phelps)