flag drop
n.— «The rate increase is the first since 2005, and the second since the Philadelphia Parking Authority (PPA) assumed regulatory authority of local taxis that same year. Though the initial fare, commonly called the “flag drop,” will effectively stay the same at $2.70.» —“Taxi Fares Will Increase In June” by Dan Hirschorn The Bulletin (Philadelphia, Pennsylvania) Feb. 26, 2008. (source: Double-Tongued Dictionary)
Further reading
Need a slang term that can replace just about any noun? Try chumpie. If you’re from Philadelphia, you may already know this handy placeholder word. And there’s Queens, Brooklyn, Staten Island, Manhattan, and … The Bronx — why do we add...
A Philadelphia, Pennsylvania, listener says when he was growing up, his family used the word schmutz as a verb. For example, when one parent reminded the other to apply sunscreen to the youngsters, they might say Make sure you schmutz the kids...