RED-LETTER DAY

 A husband and a wife decide they need a way to let each other know when they want to have sex without letting their kids in on it. So they decide on the code word typewriter. One day the husband says to his 5-year-old daughter, "Go tell your mommy that daddy needs to bang out a letter  on the typewriter. "The child gives her mom the message, and the mom replies, "please tell your dad he can't type right now  because there's a red ribbon in the typewriter and the letter  would come out red. "A couple of days later, the mom tells the daughter to relay the message to her father. "Tell daddy  he can come and use the typewriter now. "The girl talks to her father, then returns with yet another message. "Daddy said never mind the typewriter; he already wrote the letter by hand.