They decided on the word Typewriter.
One day the husband told his five year old daughter, “Go & tell your mummy that daddy needs to type a letter”.
The child told her mother what her dad said, and her mummy responded,
“Tell your daddy that he can’t type a letter right now because there is a red ribbon in the typewriter.”
The child went back to tell her father what mummy said.
A few days later the mummy told the daughter, “Tell daddy that he can type that letter now.”
The child told her father, she then returned to her mother and announced,
“Daddy said never mind with the typewriter, he already wrote the letter by hand.”