Cave Family Swingers
From the TV series It's About Time (08/13/1967). Imagine Gilligan's Island, only instead of being stuck on an island, you're stuck back in time with cavemen. That's the premise of this Sherwood Schwartz created sitcom.
When the astronauts get rescued, the cave family sneaks aboard with them, where they are supposedly and amusedly mistaken for beatniks and hippies. In the "Cave Family Swingers" episode, their primitive beating on things becomes a number one hit.
Mom caveman was Shadd (Imogene Coca); Dad caveman was Gronk (Joe E. Ross).