Notice the scene in the diner where Ricky asks the Mertzes, "Are you going to get behind the counter or 'nut'(not)", and Ethel asks Ricky the same question also saying "nut". This is a very rare incident in which someone other than Lucy makes fun of Ricky's English. Strangely, the audience never cared for anyone to make fun of Ricky, but had a blast when Lucy did.
During the diner scene, many members of Arnaz's orchestra have uncredited part at the counter, among them: Marco Rizo, Alberto Calderon, Ralph Brady, and Joe Miller.