CHICAGO — The Green Bay Packers are headed to town for the NFC championship game and Chicago Bears fans are starting to become, well, a bit unbearable.

Turn on the radio in Chicago and you’ll hear no shortage of jokes about Packers fans, many of which have something to do with low intelligence. There’s been plenty of laughs over a Green Bay newspaper headline that read “On To Chicaco.” Many more center on the dietary habits of fans north of the “Cheddar Curtain,” like this one:

What do you call a 400-pound Packer fan? Anorexic.

All of this sniping, fun or otherwise, makes sense since the NFL’s oldest rivalry has had 92 years to simmer. Vince Lombardi, Don Hutson, Bart Starr, Ray Nitschke, Bronko Nagurski, Dick Butkus, Mike Ditka and Walter Payton — all of those names and more add to the rich history, but so does the relationship between the loyal fans in the two states.

John Cochara has been hearing from his so-called friends who decided he was celebrating a Packers win over the Bears a little too much in 1995 and duct-taped him to a stop sign.

“They’re saying, ‘You better watch out, there are a lot of stop signs out there,’” said Cochara, whose punishment outside a bar just south of the Wisconsin-Illinois state line included a sign over his head that read “Packer Fan.”

The Super Bowl Shuffle video by the 1985-86 Bears is getting tens of thousands of fresh clicks on YouTube. At least one Chicago TV station got texts imploring them to ask Packers fans to swear off cheese or, at least cheeseheads, cheese ties and, honestly, cheese bras.

On the other side of the state line, Packers fan Frank Emmert Jr. of Lake Superior, Wis., reminisced this week about the time he survived a small plane crash in 1995 thanks to the foam cheesehead he put over his face seconds before impact.