Jim & Edna were both patients in a mental hospital. One day they were walking past the hospital swimming pool and Jim suddenly jumped into the deep end and sank to the bottom.
Edna promptly jumped in after him, swam to the bottom, dragged him out and took him back to his room.
When the hospital director heard about Edna's heroic act, he immediately ordered that she be discharged, as he considered her to be mentally stable.
He went to see her and said "I have some good news and some bad news.
The good news is that you are being discharged because you responded so rationally to a crisis.
By jumping in the pool to save the life of another patient, you displayed sound mindedness.
The bad news is that Jim, the patient you saved hung himself with his bathrobe after you had saved him and I'm sorry to tell you that he's dead"
Edna replied "He didn't hang himself, I put him there to dry. When can I go home??"