New Orleans Saints fan during the first quarter of an NFL football game against the New York Giants in New Orleans, Monday, Nov. 28, 2011. (AP Photo/Bill Feig)

Arizona Cardinals fans Meghan McGuire, left, and Angie Gavin, both of Phoenix, tailgate prior to the start of an NFL football game between the Cardinals and the Oakland Raiders Sunday, Sept. 26, 2010, in Glendale, Ariz. The Cardinals defeated the Raiders 24-23. (AP Photo/Ross D. Franklin)

Two Green Bay Packers fans dress up in team gear, complete with a cheesehead hat and a Darth Vader hat, make an appearance at the Super Bowl media center during the week of NFL Super Bowl XLV (between the Pittsburgh Steelers and the Green Bay Packers) on Friday, February 4, 2011, in Dallas, Texas. (AP Photo/Paul Spinelli)

Saints fan during an NFL preseason football game at the Louisiana Superdome in New Orleans, Thursday, Sept. 1, 2011. (AP Photo/Bill Feig)

A Pittsburgh Steelers fan watches pre-game before an NFL football between the Pittsburgh Steelers and Seattle Seahawks Sunday, Sept. 18, 2011 in Pittsburgh.(AP Photo/Don Wright)

Fans prior to the start of an NFL football game between the New Orleans Saints and the Chicago Bears at the Louisiana Superdome in New Orleans, Sunday, Sept. 18, 2011. (AP Photo/Bill Feig)

Young Detroit Lions fan looks up at the scoreboard in the first quarter of an NFL football game against the Kansas City Chiefs in Detroit, Sunday, Sept. 18, 2011. (AP Photo/Rick Osentoski)

A Buffalo Bills fan cheers during warmups before an NFL football game against the New England Patriots in Orchard Park, N.Y., Sunday, Sept. 25, 2011. (AP Photo/Derek Gee)

A football fan looks on during the fourth quarter of an NFL football game between the St. Louis Rams and Baltimore Ravens Sunday, Sept. 25, 2011, in St. Louis. The Ravens won 37-7. (AP Photo/Seth Perlman)

A pair of Tampa Bay Buccanneers fans are shown in the parking lot before their NFL football game against the San Francisco 49ers in San Francisco, Sunday, Oct. 9, 2011. (AP Photo/Paul Sakuma)

A dog named Packer who is owned by Ron Belim of Valparaiso, Ind., sits in the parking lot of Lambeau Field before an NFL football game between the Green Bay Packers and the Detroit Lions Sunday, Oct. 3, 2010, in Green Bay, Wis. (AP Photo/Mike Roemer)

Fans are seen before an NFL football game between the Kansas City Chiefs and the San Diego Chargers Monday, Oct. 31, 2011, in Kansas City, Mo. (AP Photo/Charlie Riedel)

A Washington Redskins fan dressed in an Uncle Sam costume salutes during the NFL week 11 football game against the Dallas Cowboys on Sunday, November 20, 2011 in Landover, Maryland. The Cowboys won the game in overtime 27-24. (AP Photo/Paul Spinelli)

Detroit Lions fan Ward Elliott, of Livonia, Mich., cheers during before the Detroit Lions-Carolina Panthers NFL football game in Detroit, Sunday, Nov. 20, 2011. (AP Photo/Paul Sancya)

Tampa Bay Buccaneers fan Doug Garrett watches players warm up before an NFL football game between the Buccaneers and the Tennessee Titans on Sunday, Nov. 27, 2011, in Nashville, Tenn. (AP Photo/John Russell)

Raider fans tailgate before an NFL football game against the Chicago Bears in Oakland, Calif., Sunday, Nov. 27, 2011. (AP Photo/Paul Sakuma)

A New Orleans Saints Fan shows his spirit during the NFL week 12 regular season football game against the New York Giants on Monday November 28, 2011 at the Mercedes Benz Superdome in New Orleans, Louisiana. The Saints won the game 49-24 . (AP Photo / Jim Mahoney)

A denver Broncos fan cheers during an NFL football game between the Denver Broncos and the Chicago Bears in Denver, Sunday, Dec. 11, 2011. (AP Photo/Jack Dempsey)

Washington Redskins fans sing the National Anthem before an NFL football game against the New York Jets in Landover, Md. Sunday, Dec. 4, 2011. (AP Photo/Evan Vucci)

A Buffalo Bills fan poses during an NFL football game between the Buffalo Bills and the San Diego Chargers Sunday, Dec. 11, 2011 in San Diego. (AP Photo/Denis Poroy)

A Detroit Lions fan yells before an NFL football game against the Green Bay Packers Sunday, Jan. 1, 2012, in Green Bay, Wis. (AP Photo/Jim Prisching)

An Cincinnati Bengals fan during the second half of an NFL football game against the Baltimore Ravens Sunday, Jan. 1, 2012, in Cincinnati. Baltimore won 24-16. (AP Photo/Darron Cummings)

A fan cheers before an NFL football game between the San Francisco 49ers and the Pittsburgh Steelers in San Francisco, Monday, Dec. 19, 2011. (AP Photo/Marcio Jose Sanchez)

An Oakland Raiders fan is shown before an NFL football game between the Oakland Raiders and the San Diego Chargers in Oakland, Calif., Sunday, Jan. 1, 2012. (AP Photo/Marcio Jose Sanchez)

A Jacksonville Jaguars fan wearing a fake mustache, to honor new team owner Shahid Khan, watches a game between the Jacksonville Jaguars and the Indianapolis Colts during the second half of an NFL football game Sunday, Jan. 1, 2012, in Jacksonville, Fla. Jacksonville won 19-13. (AP Photo/John Raoux)

An Arizona Cardinals fan cheers against the Seattle Seahawks during the first half of an football game Sunday, Jan. 1, 2012, in Tempe, Ariz. (AP Photo/Paul Connors)