Noun- Annoying upwardly mobile young professionals who incessantly talk/text about nothing of any social value. Usually pertaining to their latest material purchase, who they had dinner with or other inane subjects.
I wish that Yappie would shut up about his weekend in the Hamptons.
If that Yappie next to me doesn't shut up about how many facebook friends he has, I'm going to break my beer bottle over his head.
If that jackass Yappie could quit Twittering for five seconds, he might actually learn something.