Dynamic Yiddishkayt for the New Millennium
To quote my own notes: "I read recently in the first volume of Bialik's folklore journal Reshumos, but haven't seen quoted anywhere else. This concerns a later period, probably the 1860s. It seems there was a person named Mendele who was known as the Baal Gematrios, because he could quickly come up with a Gematriya for anything. One time Mendele walked into an inn and came upon a group of bareheaded Jews dressed in modern clothing eating and drinking. So he said to them, "Sholom Aleichem, Berliners!" One of them answered, "Aleichem Sholom, Karliner!" He thought for a second, and said that to the guy that he is right. The difference between a ברלינער and a קרלינער is כובע. "