I love this. Does anyone remember seeing it when it first aired? I'm not sure of the year. I think I saw it back then. My memory is that Carol and Vicki did it in character for only one show and the rest of the week as themselves. Whatever, it was a great and fun idea to do it as Mama and Eunice.

www.dailymotion.com/video/x66mb98

They were up against a couple of the Hello, Larry characters. This aired at some point during the 1979-1980 season.

It's also on YouTube:

https://www.youtube.com/watch?v=tacCDPvls40