He didn't even have the 'common courtesy' [=he was not even as polite as people can usually be expected to be] to say goodbye when he left.
He picked up the airport 'courtesy phone' [=a telephone that customers can use to call the company that provides it] to call for a car.
They paid a 'courtesy call' on the ambassador. [=they visited the ambassador because it was the polite thing to do]
(..) ...frustrated and impressionable kids. This kid Vinyard, well, he's got a lot of baggage... ...as you'll see in this tape that we've gotten courtesy of NBC. REPORTER : L.A. County firefighter Dennis Vinyard... ...was shot and killed battling a blaze at a suspected Compton drug den. (..)1998 American History X