The Flintstones - The Hatrocks and the Gruesomes

Seizoen: 5 - Aflevering: 19 / 135 - Eerst uitgezonden: 22 januari 1965 - Episode ID: 297850

When Fred's hillbilly friends the Hatrocks come to visit, even the Gruesomes can't scare them away. Fred finally discovers their aversion to rock music, and uses it to chase them back to the hills.