beat bag
n.— «Deputy Inspector Frank Biehler, commanding officer of the 24th Precinct, said that many of the people still hanging around in doorways and on street corners were undercover police officers. Others, he said, were “simple truants, people in illegal gambling, and kids in the beat bag business,” who sell oregano to unsuspecting people out to buy marijuana.» —“Day After Crack Raid It’s Still Cat And Mouse” by Howard W. French New York Times June 20, 1987. (source: Double-Tongued Dictionary)