Well after catching the thread on the Alzheimer's Test, this one came to mind...
Mr Smith got called into the doctor's office for the results of his tests
"Mr Smith, you test results are back, and I am afraid that I have bad and even worse news to tell you" "Which would like to hear first?"
Well, Doc, you better give me the worse news first!!"
"Ok Mr. Smith...it appears that you have cancer and will only live for another 6 months"
"Oh no Doc, don't tell me that
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"
"Well then Doc what is the BAD news?"
Well Mr. Smith, it appears that you are in the advanced stages of Alzheimers!!"
With that Mr. Smith replies....
"Well that is not so bad..at least I don't have cancer"