I Love Lucy - Season 1 - Eps 22: Fred and Ethel Fight
Fred and Ethel have been going at each others' throats for the past few days now, and aren't talking to each other any more. (Fred: She called my mother a weasel!)To get them back together, Lucy comes up with a plan: She will invite Ethel to dinner, while Ricky will invite Fred. Neither Mertz will know that the other is coming, Lucy hopes that she can bring the Mertzes together so they can talk out their issues. Lucy commences with her plan, but during dinner, she and Ricky start to bicker. By the end of supper, the Mertzes leave the Ricardos' apartment as happy as larks, but Lucy and Ricky are now at each others' throats. It's now up to the Mertzes to bring the Ricardos back together.
About I Love Lucy

Title: I Love Lucy
First Air Date: 1951-10-15
Last Air Date: 1957-05-06
Status: Ended
Rating: 7.905/10 (from 226 votes)
Language: EN
Seasons: 7
Total Episodes: 180
Network: CBS
Genres: Comedy, Family
Production Companies: Desilu Productions
Synopsis
Cuban Bandleader Ricky Ricardo would be happy if his wife Lucy would just be a housewife. Instead she tries constantly to perform at the Tropicana where he works, and make life comically frantic in the apartment building they share with landlords Fred and Ethel Mertz, who also happen to be their best friends.
Cast

Lucille Ball
Lucy Ricardo

Desi Arnaz
Ricky Ricardo

Vivian Vance
Ethel Mertz

William Frawley
Fred Mertz