From a Ca guy:
“we was raised fairly bad, but we went to a university that drew pupils from some extremely rich families. A rich classmate invited me off to dinner one evening whenever her household ended up being visiting, and now we went along to the fanciest restaurant I would ever gone to.
“throughout the salad program, the waiter brought a cloth-covered platter with the thing I discovered later were chilled forks. We reached to use the platter away from their fingers around the table to the others so I could pass it. Evidently, judging through the laughter from my classmate’s sis and parents, it was a major faux pas.