Louis is in the hospital, on his death bed, breathing his last. His wife Muriel is at his bedside clutching his hand. The doctor rushes in exclaiming, “Muriel, we know what can save his life! He just needs a blood transfusion! We don’t know his blood type and there is no time to take a test! What’s his blood type, what’s his blood type?!” Muriel does not know and the doctor hangs his head and leaves. Louis clutches Muriel’s hand tighter and expires.
One week later Muriel is at the wake for Louis. In front of everyone gathered she is extolling his virtues, what a wonderful family man he was, how he always tried to inspire people, always tried to be uplifting. “Even on his deathbed, as he took his final breath, he clutched my hand tighter and said, “Be Positive.”
Take this as a public service joke, Know Your Blood Type.