In the opening scene, Gomer is carrying on a protracted conversation with Jason at the filling station. A customer in a station wagon drives up close behind Jason's car and begins blowing his horn repeatedly for service. The station wagon is seen several times behind Jason's car. When the view cuts to Gomer telling Jason that the problem was a corroded battery terminal, the station wagon has vanished. But seconds later, the angry driver is back behind Jason and he hurriedly backs away from Jason's sedan and speeds off.
An unseen adult neighbor threatens to call the police. Mayberry has only a sheriff and deputy sheriff. Any adult living in this small town would know that. The angry neighbor would also know that the noise is coming from the Sheriff's house.