Once upon a time, in a nursing home, three mischievous old grannies were sitting on a bench, enjoying the afternoon sun. Suddenly, an old grandpa walked by, catching their attention.

With mischievous smiles on their faces, one of the grannies called out, “We bet we can tell exactly how old you are!” The old man chuckled and replied, “There is no way you can guess it, you old fools.”

Not backing down from the challenge, one of the grannies confidently said, “Oh, we can do it! Just drop your pants and under shorts, and we can tell your exact age.” The old man’s face turned a shade of red, but he was also intrigued to prove them wrong. With a mix of embarrassment and anticipation, he dropped his drawers.

The grannies instructed him to turn around a couple of times and jump up and down several times. The old man obediently followed their directions, wondering how they could possibly determine his age by these actions.

Then, with a triumphant expression, the grannies exclaimed, “You’re 87 years old!” Astonished and standing there with his pants down around his ankles, the old gent couldn’t help but ask, “How in the world did you guess?”

The grannies burst into laughter, slapping their knees, and grinning from ear to ear. In unison, they happily yelled, “We were at your birthday party yesterday!”