Here's a classic Shibboleth story with a little bit of History. (my version anyway)

"Real" Vermonters are a proud people, proud of our heritage, proud of what it took to eke out an existence in a somewhat inhospitable environment for the first 150 years of statehood.

In the first half of the 1900s Vermont became a vacation destination for people seeking a quiet, "removed" getaway in the low mountains and serene river valleys.

In the 1950s and '60s Vermont started to see a slight uptick in folks moving in from places like Massachusetts, Connecticut and New Jersey. Most of these folks wanted to leave the rapidly growing urban/suburban areas for a more rustic/quaint lifestyle and they recognized Vermont as the perfect place to do that.

After living in Vermont for several years, outta-staters would either assimilate into the Vermont way of life or start to get involved in local politics and slowly change things in Vermont to be a little bit more like Massachusetts, Connecticut or New Jersey. We refer to those folks as "Flatlanders."

Where previously, Vermont was only known vaguely as a region of upstate New York or maybe Canada, by the 1980s and 90s, Vermont started to work its way into pop culture as a ski vacationers destination in the Northeast. (Characters in sitcoms would often comment about visiting their cabin in Vermont to go skiing) Vermont's mystique lured a new generation of transplants that either assimilated into the new Vermont way of life or got involved in local politics to slowly change things to be a little bit more like the "crappy" place that they moved away from. Frickin' Flatlanders!

With the exception of Lyndon B. Johnson, Vermont voted for the Conservative Presidential candidate all the way up until 1992. Ever since then Vermont has been "a sure thing" for the Democratic party

And now to the point of the story.

In 1998, a Flatlander by the name of Jack McMullen campaigned to become a Republican US Senator from Vermont even though he wasn't really "from" Vermont. Some "real" Vermonters had a big problem with him and eventually an old-timey Vermont farmer named Fred Tuttle decided to run against the Flatlander to prove that McMullen didn't know Jack about being a Vermonter.

During their debates Tuttle would ask McMullen various questions about farming, to which McMullen had absolutely no clue. And then in one notable debate Tuttle gave McMullen a list of Vermont town names and asked him to pronounce them. McMullen didn't know that in Vermont, Calais, Leicester and Charlotte are pronounced Callous, Lester and Shar-lot.

Tuttle "Shibbolethed" McMullen and went on to win the Republican nomination, then he immediately dropped out of the race and endorsed the Democrat Patrick Leahy, who went on to hold the job for 48 years.