Jim and Mary were both long time patients at the Betty Frodo Insane Asylum. Their psychiatrist had felt that they were both well on their way on the road to recovery... But, one day, while they were walking past the asylum swimming pool, Jim suddenly jumped off the deep end. Not being able to swim, he quickly sunk to the bottom like a brick and stayed there.
Mary, being a quite proficient swimmer, promptly jumped in to save him. She quickly swam to the bottom and pulled Jim out.
When the medical director became aware of Mary's heroic act, he immediately ordered her to be discharged from the asylum, as he now considered her to be fully cured and mentally stable.
The next day, after the release papers had been processed, he went to tell Mary the news, he said; "Mary, I have some good news and some bad news. The good news is you're being discharged because you were able to jump in and save the life of another patient. I feel completely confident that you've regained your senses..."
The doctor bowed his head in sympathy and then said; "The bad news is that Jim, the patient you saved, hung himself with his belt tied to the shower head last night. I am so sorry, but he's dead."
Mary, looking puzzled, replied; "He didn't hang himself, I put him there to dry."