Three mischievous old Grannies were sitting on a bench outside a nursing home….
when an old Grand-Dad walked by.
One of the old Grannies yelled out to the Grand-Dad, "We bet we can tell exactly how old you are."
The old man said, "There is no way you can guess it, you old fools."
One of the old Grandmas said, "Sure we can! Just drop your pants and under shorts Old Man and we can tell your exact age."
Embarrassed just a little but anxious to prove they couldn't do it, the Old Man dropped his drawers.
The Grandmas 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 Man in amazement asked, "How in the hell did you guess?"
Slapping their knees and grinning from ear to ear, the three old ladies happily yelled in unison...
"We were at your birthday party yesterday!"
