The Flintstones S01E14 - The Prowler

With a prowler on the loose in Bedrock, Betty decides to take judo lessons to protect herself. When Wilma wants to take lessons also, Fred ridicules the idea, arguing that one glimpse of a prowler would send her running in fear. To prove his point, Fred poses as the prowler and sneaks into the Rubble household, on the same night the real prowler shows up.