49ers fans are donning foam hats of their own, but what are they?

SAN FRANCISCO (WITI) -- Football fans around the country may scoff at fans of the Green Bay Packers when they proudly stick a hunk of foam cheese on their heads. But have you seen what foam thing 49ers fans are sporting these days?

FOX6's Ted Perry took what is known as the 49ers golden nugget hat and shared it with others in the souvenir stores in San Francisco. Most believe it doesn't look like a golden nugget as much as it does something else. You can use your imagination.