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Similar to a Bellwether, a John Ringer refers to a leading indicator of some sort of change, similar to "canary in a coal mine". Unknown origin, has been used as a common phrase in corporate conference call settings at least going back to the late 90's.
As you can see here on this chart, the strong sales numbers act as a great John Ringer indicating healthy growth.
by hackysackman February 18, 2021
May 3 Word of the Day
Internet persona(s) who happens to follow you and you happen to follow them back and maintain communication with and have a mutual liking for eachother whether it be friendship wise, etc. (Mutuals if more than one mutual)
Monica: Oh yay! I made a new mutual today because we started following & talking to eachother on twitter and we like eachother (so it seems).
by qtheresurrection March 25, 2015