Jim and Mary were both patients in a Mental Hospital. One day while they were walking past the hospital swimming pool, Mary suddenly jumped into the deep end. She sunk to the bottom and stayed there.

Jim promptly jumped in, swam to the bottom and pulled her out. When the medical director became aware of Jim's heroic act he immediately ordered him to be discharged from the hospital, as he now considered him to be mentally stable.

When he went to tell Jim the news he said, 'Jim, I have good news and bad news. The good news is you're being discharged because since you were able to jump in and save the life of another patient, I think you've regained your senses. The bad news is, Mary, the patient you saved, hung herself with her dressing gown belt in the bathroom. I am so sorry, but she's dead.'

Jim replied, 'She didn't hang herself. I put her there to dry.'