Mike and Sharon don't like discussing sex in front of their young children, so they decide to talk in code. This comes in handy one day, as Mike is feeling quite amorous, and said to young Katie, "Tell your mother I would really like to type a letter."
Katie ran off to find her mom. "Mommy, mommy", shouted Katie, "Daddy would like to type a letter."
Sharon replied sheepishly, "Katie, go and tell your daddy that he can't type a letter today, there is a red ribbon in the typewriter."
Katie tore off to her father and said, "Daddy, daddy, mommy says you can't type a letter today 'cuz there is a red ribbon in the typewriter."
The next day later Sharon remembered that Mike was looking for a bit of nookie, and she called out to Katie, "Katie, tell your daddy that he can type that letter today."
So Katie went off to look for her father and told him, "Daddy, mommy says you can type the letter today."
"Thats OK, Katie", Mike said. "You can tell your mother that I don't need the typewriter today... I already wrote the letter by hand."