Three's Company Season 7 Episode 14

A building inspector claims that there's a minor infraction at Jack's restaurant which gives him cause to have it closed unless Jack pays him off. The girls tell him to record the man soliciting a pay off. He calls the police and a detective comes and plays the tape, Jack leaves for a moment and the cop only hears Jack's earlier conversation with Furley about "pot" "from Mexico" that could be costly. So the police go after Furley.