past-poster
n.— «At the roulette table the subject is the “team past post,” a deft system that accomplices use to slip a huge bet onto the table after the ball has dropped on the winning number. The best past-posters distract the dealers with a clumsy simultaneous attempt that is caught and thrown back.» —“Cheating 101: Police and Other Officials Learn to Spot Those Who Break the Rules of the Game” by Iver Peterson New York Times May 4, 1994. (source: Double-Tongued Dictionary)