Yep, that video was annoying. That's why I didn't post it here. LOL
I googled and found this:
"Ethel had three different middle names: Ethel Roberta in the episode where they bottle Aunt Martha's Old Fashioned Salad Dressing, Ethel Louise when the girls bought the same dress for the "Friendship" number, and Ethel Mae when they went to Albuquerque."