Ethel had six votes, as did Lucy, and only needed Ruth Knickerbocker's vote to break the tie and become president.

Ethel owns the building they all live in, but apparently lets Fred take care of all the "landlord" duties.

Ethel played the fairy princess in the school play, The Enchanted Forest, but only because she happened to fit the costume from last year perfectly.

Ethel won't ride the subway in jeans.

NitAlert
Ethel had three middle names throughout the series' run: Roberta, Louise, and Mae.

In quite a few episodes, Ethel can play the piano beautifully, but when the Wednesday Afternoon Fine Arts League tries to form a band, she can't.

When Lucy goes camping with Ricky, Ethel drives a station wagon, but when they are going to California, she needs driving lessons from Lucy.