When I was little, this used to be on TV (TNT, I think?) ALL. THE. TIME. Now it's been replaced by...Law & Order??
For posterity's sake, here goes nothing:
Flintstones, meet the Flintstones.
They're the modern Stone Age family.
From the town of Bedrock,
They're a page right out of history.
Let's ride with the family down the street
Through the courtesy of Fred's two feet!
When you're with the Flintstones
Have a yabba dabba doo time
A dabba doo time
You'll have a gay old time!