What is Shibboleth?
1.
1) Word for a slag word used to denote something cool.
2) one itself
1) grovy, shibby, sick
2) Person 1: I got a new car!
Person 2: Shibboleth!
2.
A flavor of the month word that entirely too many people are suddenly using.
It means something like a custom or belief attributed to a group or class of people, especially one outmoded. (Thanks Oxford)
I propose that it should mean someone who uses trendy 'new' words to fit in with the current blog crowd using the same damn word, relentlessly.
"God damn, did you see that Shibboleth? He started saying every new blog buzzword of the day like it was going out of style. What a Shibboleth."
See