Pete invited his mother over for dinner.
During the meal, his mother couldn't help noticing how handsome Pete's roommate was. She had long been suspicious of Pete's sexuality and this only made her more curious. Over the course of the evening, while watching the two men interact, she started to wonder if there was more between Pete and the roommate than met the eye. Reading his mom's thoughts, Pete volunteered, "I know what you must be thinking, but I assure you, Rob and I are just roommates."
About a week later, Rob came to Pete and said, "Ever since your mother came to dinner, I've been unable to find the beautiful silver gravy ladle. You don't suppose she took it, do you?" Pete 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. Love, Pete
Several days later, Pete received a letter from his mother which read: Dear Son, I'm not saying that you 'do' sleep with Rob, and I'm not saying that you 'do not' sleep with Rob. But the fact remains that if he was sleeping in his own bed, he would have found the gravy ladle by now. Love, Mom.