Three mischievous old grannies were sitting on a bench outside a nursing home when an old man walked by.
One of the old ladies called out, saying,
“We bet we can tell exactly how old you are.”
The old man responded,
“There is no way you can.”
One of the women said,
“Sure we can! Just drop your pants and undershorts and we can tell your exact age.”
Embarrassed just a little, but anxious to prove they couldn’t do it, he dropped his drawers.
They asked him to first turn around a couple of times and to jump up and down several times.
Then they all piped up and said,
“You’re 87 years old!”
Standing with his pants down around his ankles, the old gent asked,
“How in the world did you guess?”
Slapping their knees and grinning from ear to ear, the three ladies happily yelled in unison…
“We were at your birthday party yesterday!”