At dinner, when Ethel starts throwing biscuits to Lucy, Lucy then throws them to Phoebe Littlefield, who then distributes them on the table. But when Lucille Ball throws the fourth biscuit, Edith Meiser misses it, and it can be seen rolling on the floor behind her.
When Mrs. Littlefield is speaking to Lucy in the living room, she mistakenly says "sees what he likes" when she meant to say "likes what he sees."
The Ricardos were due for dinner at the Littlefields' at 7:30. Once Ricky realizes that it's 8:00pm, not 6:00, he inexplicably doesn't call the Littlefields to let them know they've been delayed. This is very out of character for Ricky, as he's usually very dependable and prompt.