Philip Sondericker wrote:

The editors of several Berlin newspapers would be surprised to hear that
(Berliner Morgenpost, Berliner Zeitung, etc.). Berliner refers to a resident
of Berlin, just as a Hamburger is a denizen of Hamburg and a Frankfurter
resides in Frankfurt.

"Ich bin Berliner" translates as "I am a Berliner". "Ich bin EIN Berliner"
translates as "I am a jelly doughnut".

George Patterson
They say nothing's certain except death and taxes. The thing is, death
doesn't get worse every time Congress goes into session.