A 78 year-old man came into the Doctor's office and complained of
being tired. The Doctor asked if he'd done anything unusual lately.

The man said, "Well, Wednesday night I picked up a 20 year old
secretary, went back to her place, and nailed her 3 times. Thursday,
I met a 19 year old waitress at the diner and we went out to Lover's
Rock and made love 4 times. Friday, I went out with an 18 year old
friend of my granddaughter's and we ended up making it in the back of
my Ford. Saturday I was lured into a motel by 17 year old twins..."

The Doctor said, "That's absolutely astonishing. But with all the
dangers of sex these days, I hope you took proper precautions..."

"Of course," the old geezer replied, "I game 'em all phony
names..."