There were three cheeky old grandmothers enjoying the afternoon sunshine on a bench outside their nursing home. As they chatted and giggled amongst themselves, an elderly gentleman happened to stroll by.

One of the sprightly grandmas suddenly called out, “We bet we can guess exactly how old you are!”

The old man paused and chuckled, “There’s no chance you can figure it out, you old rascals,” he responded, a teasing grin on his face.

Another grandma, with a mischievous twinkle in her eye, challenged him further, “Sure we can! All you need to do is drop your trousers and your underwear, and we’ll tell you your exact age.”

Though feeling a bit bashful, the curious old man took on their playful dare, thinking it impossible for them to win. He dropped his trousers as requested, allowing the grannies a proper observation.

“Now let’s see,” they said, asking him to turn around a few times and jump up and down for a bit. It was quite the scene, but the old man obliged in good spirits.

After a careful examination and some giggling whispers exchanged between them, the grandmas announced in unison, “You’re 87 years old!”

Surprised and quite impressed, the elderly gentleman, with his trousers still pooled around his ankles, asked, “How on earth did you know?”

The three lively grannies burst into laughter, slapping their knees and beaming broadly. “We were at your birthday party yesterday!” they declared with glee.