In the pentultimate episode of Where's Huddles, Ed Huddles (Cliff Norton) develops a case of fumble-itis, and doesn't know why. Maybe it's a sudden case of the yips, but we don't know for sure. Anyway, Bubba (Mel Blanc) creates a homemade super glue to solve the problem, and to keep from getting evicted, the boys let snooty Claude Pertwee (Paul Lynde, The Hollywood Squares, Bewitched) in on the plot.
In case you didn't notice, the 9 squares featuring the core cast at the top of the show is a minor call back to not only Squares, as Lynde was the regular center square by that point, but also The Brady Bunch. Sneaky, eh?