Speaking of furriners, there have been several times when I told some young man sitting in the front of the bus (where the advice is clearly posted to offer a seat to the "elderly or disabled" that in this country it is customary to give up one's seat to an older person. So far they have always moved. Although one time I jumped up and said, OK then, if you won't offer your seat, I will - and let some little old lady sit down. That same young man then offered me his seat - and I took it. :)