“A SHOT OF WHISKEY’”
—
As I understand it, that’s a bit of an urban legend. Addressed more or less here, for an example.
https://www.drinkstuff.com/blog/how-did-the-shot-glass-get-its-name
From your link;)
****Why do we use these small glasses and how did they get their names? Well, I may not have the answer but I do have a few theories.****