John invited his mother over for dinner.

During the meal, his mother couldn't help noticing how beautiful John's
roommate Julie was. She had long been suspicious of a relationship
between John and his roommate, and this only made her more curious.

Over the course of the evening, while watching the two interact, she
started to wonder if there was more between John and the roommate than
met the eye.

Reading his mom's thoughts, John volunteered, "I know what you must be
thinking, but I assure you, Julie and I are just roommates."

About a week later, Julie came to John and said, "Ever since your mother
came to dinner, I can't find the beautiful silver gravy ladle. You don't
suppose she took it, do you?"

John said, "Well, I doubt it, but I'll write her a letter just to be
sure."

So he sat down and wrote, "Dear Mother, I'm not saying you 'did' take a
gravy ladle from my house, and I'm not saying you 'did not' take a gravy
ladle.But the fact remains that one has been missing ever since you were
here for dinner."

Several days later, John received a letter from his mother which read,
"Dear Son, I'm not saying that you 'do' sleep with Julie, and I'm not
saying that you 'do not' sleep with Julie. But the fact remains that if
she was sleeping in her own bed, she would have found the gravy ladle by
now."