When she asked how her grandfather died, her grandmother replied: "It was a heart attack, he got it while we were making love on Saturday morning."
Horrified, Nancy told her grandmother that 2 people nearing 100 years of age probably shouldn't be indulging in such dangerous passions.
"Oh no, my dear, " replied her gran. "Many years ago, realizing our advanced age, we figured out the best time to do it was when the church bells would start to ring. It was just the right rhythm. Nice and slow and even. Nothing too strenuous. Simply in on the 'Ding' and out on the 'Dong'."