past-poster
n.— «“He (Atlas) is well known in New Jersey as a man who bets with bookmakers after the horse is in the barn,” Kitzler testified further. This type of bettor, the detective said, is known as a “past-poster”—a man who bets with unsuspecting bookmakers after he learns the results of a race.» —“Atlas’ Record Aired for PUC” Washington Post and Times Herald Apr. 24, 1958. (source: Double-Tongued Dictionary)
Further reading
Sean in Oneonta, New York, says that when he was growing up in New Jersey, his family would pile in the car and set off on a surprise adventure, whether a short distance or long, and the kids would be told only that they were going on Buxtehude...
Amid court-ordered busing in the 1970s, a middle-school teacher tried to distract her nervous students on the first day of class with this strange assignment: find a monarch caterpillar. The result? A memorable lesson in the miracle of metamorphosis...