Did you notice how Homer told Rosco that the "Duke boys just robbed me. Picked me clean as a chicken.", yet Rosco immediately upgraded the crime and told Boss "You know, there's nothing like starting the day with a good armed robbery." Homer never claimed that the Dukes were armed, he just said that they'd robbed him.
BTW. A bit of Dukes trivia: In which other episode does Homer Griggs make an uncredited cameo?