I know a stone mason who did a job rebuilding a fireplace chimney for a man he suspected was a deadbeat. Sure enough, job completed, no pay. A couple of weeks later, DB lights up the fireplace for the first time post-rebuild and his house fills up with smoke. DB calls up the mason and *****es. Mason says pay my bill in cash and I can remedy the problem. DB agrees, mason comes over, gets his cash, and climbs up on the roof with a broom. He places the broomstick in the chimney with a churning motion and the sound of breaking glass is heard. It turns out the mason had installed a small pane of clear glass across the chimney opening during the rebuild process.