A doctor recently had a patient drop in for an unscheduled appointment.
"What can I do for you today?" the doctor asked.
The elderly gentleman replied, "Doctor, you must help me. Every time I make love to my wife, my eyes get bleary, my legs go weak, and I can hardly catch my breath. Doctor, I'm scared!"
The doctor, looking at his 86-year-old patient, said, "Mr. Smith, these sensations tend to happen over time, especially to a man of your advanced years. But tell me, when did you first notice these symptoms?"
The old gentleman's response was, "Well... three times last night, and twice again this morning!"