I always thought it was odd growing up that everyone called it a “weegee” board. Because that’s certainly not what its spelling would suggest. Is that pronunciation universal, or just local to where I grew up?
(Not in this article but another I read suggesting “oui” + “ja” to get “yes-yes” in French/German.)
I think most Americans are used to seeing the commercial-style boards with the teardrop shaped indicator, not a drinking glass, so that idiom would not translate.
Is it used as a shorthand for anything spooky? "We are doing science here, not glass-displacement!"