I was asked by a Turkish man in Germany. The further dialogue:

Are you Russian?

and yes.

I also have a Russian friend at work.

And this Turk worked as a sanitary in the hospital.

Yes, I am polently surprised (in Germany more than 2 million Russians, some of them probably work in hospitals).

Yes, you know, such a good guy, very polite, always willing to help if anything.

They silenced. After the pause, the Turk resumed the dialogue:

Don’t you know what the term “frog” means?