And one of the old Grandmas yelled out saying: “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 and we can tell your exact age.”
Embarrassed just a little, but anxious to prove they couldn’t do it, he 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 gent asked: “How in the world 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!”