The Flintstones: Season 3, Episode 6

3 - 6: Here's Snow in Your Eyes

Fred and Barney go on a ski trip and tell Wilma and Betty to stay home. Jealous, Wilma and Betty secretly follow them on their trip, during which the two men inadvertently catch a trio of jewel thieves. Wilma and Betty make it home before them but suspiciously have colds, but when Fred and Barney offer to take them out, the wives decline and tell the guys they'd rather stay home after all.