Flight Engineer
I was a Pan Am 552 Flight Engineer waiting for start clearance in Munich, Germany. I was listening to the radio since I was the junior crew member.
This was the conversation I overheard (I don't recall call signs any longer):
Lufthansa: (In German) "Ground, what is our start clearance time?"
Ground: (In English) "If you want an answer you must speak English."
Lufthansa: (In English) "I am a German, flying a German airplane, in Germany. Why must I speak English?"
Beautiful English Accent: (before ground could answer) "Because you lost the bloody war!"
Link:
http://www.jokes4us.com/peoplejokes/pilotjokes.html
* A QPUC question was, lately, about Brennus, the Senone chieftain involved in the Sack of Rome:
https://en.wikipedia.org/wiki/Battle_of_the_Allia