The Air Traffic Controllers at Frankfurt Airport in Germany are renowned as a short-tempered lot. They not only expect you to already know your gate parking location, but also how to get there without any assistance from them. So it was with some amusement that we (a Pan Am 747) listened to the following exchange between Frankfurt Ground Control and a British Airways 747, call sign "Speedbird 206":
Speedbird 206: "Frankfurt, Speedbird 206 clear of active runway."
Ground: "Speedbird 206. Taxi to gate Alpha One-Seven."

The BA 747 pulled onto the main taxiway and slowed to a stop.

Ground: "Speedbird 206, do you not know where you are going?"
Speedbird 206: "Stand by, Ground, I'm looking up our gate location now."
Ground (with arrogant impatience): "Speedbird 206, have you not been to Frankfurt before?"
Speedbird 206 (coolly): "Yes, twice in 1944 but it was dark and I didn't stop."