You know that old saying, "When in Rome, do as the Romans?" Ever wander what that really meant?
Here's the 4-1-1:
When visiting a foreign land, follow the customs of those who live in it. It can also mean that when you are in an unfamiliar situation, you should follow the lead of those who know the ropes.
Origin [courtesy: Phrases.org]:
St Augustine: Letters Volume I was translated from the Latin by Sister W. Parsons and published in 1951. Letter 54 to Januarius contains this original text, which date from circa 390AD:
Cum Romanum venio, ieiuno Sabbato; cum hic sum, non ieiuno: sic etiam tu, ad quam forte ecclesiam veneris, eius morem serva, si cuiquam non vis esse scandalum nec quemquam tibi.
which was translated as:
When I go to Rome, I fast on Saturday, but here [Milan] I do not. Do you also follow the custom of whatever church you attend, if you do not want to give or receive scandal.