blow-in n. an outsider; a carpetbagger. (source: Double-Tongued Dictionary)
Further reading
It was a dark and stormy night. So begins the long and increasingly convoluted prose of Edwards Bulwer-Lytton’s best-known novel. Today the annual Bulwer-Lytton Contest asks contestants for fanciful first sentences that are similarly...
How do social media algorithms shape the way we communicate? A new book argues that the competition for clicks is changing the way we speak and write, from the so-called “YouTube accent” to the surprising evolution of the word preppy. Also: A...
In the newspaper/magazine world, a “blow-in” is a separate sheet of advertising that is inserted between the pages of the newspaper/magazine by air pressure.
/s/ globalnomad
That’s right. It’s really too common for inclusion as a full entry here, however.