The Ultimate Irony

Betty saw me reading "The 36 Hour Day," an excellent reference book about Alzheimer's, and demanded to know why I was reading it. We don't mention the A word around here because she's convinced she doesn't have it, and gets upset when she hears otherwise. I told her a tasteless joke one day after she heard her diagnosis for the fourth or fifth time in a month and got upset...

A man is at the doctor's office. The doctor says, "I have bad news.
You have Alzheimer's Disease."

The man gets upset, and the doctor says,
"There's more. You also have cancer."

The man says, "Well, at least I don't have Alzheimer's Disease!"

Betty looked at me and said, "I don't get it."