Three old ladies were sitting on a bench
outside a nursing home. About then an old
man walked by, and one of the old ladies
said, "We bet we can tell how old you are."
The old man said "There ain't no way you can
guess it."
One of the old ladies said: "Sure we can.
Drop your pants!" He did.
The three ladies looked at him for a few moments
and then the other lady said,
"Take off your underwear." The guy dropped
his underwear and the old ladies
stared at him for a while longer and then
they all piped up and said, "You're 84 years
old!!"
The old man was stunned. "Amazing. How did
you guess that?" The old ladies laughed,
"You told us yesterday."