“Express Courier”

My Master's thesis was hot off the press, and I sent a copy by "express courier" to my aged mother. The thesis vanished. The agents for the courier told me they had lost their records (I had a record, but I'd lost the tracking number). Then the manager intervened. "No," he said softly, "we didn't lose our records. There is no record. It doesn't exist and it never did." He said, "I would have handled it personally. You had a lapse of memory. You never came in here with your thesis." 1½ months after placing the thesis with those agents, the "express courier" finally delivered. I told the agents. They laughed and said, "That's funny!" OBSERVATION: I guess it is -- if it's not your thesis!