Okay, I'm in.
A well to do older man goes to his doctor for his annual checkup. He tells the doc that he's divorced his wife of 30 years and has taken up with a hot young 25 year old blonde. (Sorry Rita.) The blonde has a sex drive that's been wearing him out and he asks the doc for a Viagra prescription. Concerned, the doctor replies, "You know, in this situation vigorous sex could be life-threatening." The older man replies, "Hey doc, if she dies, she dies."
(If I do say so myself!)