"I don't know," she replied.
"What do you mean you don't know? You keep track of everything!" Nasruddin exclaimed. "You know how many knives and forks we have, and how many pots and pans. You could probably tell me how many grains of rice there are in the pantry. How can you not know how old you are?"
"I keep household accounts so that I'll know if someone steals something," she replied. "But nobody is going to steal my age, so what's the point in keeping track?"
Inspired by: Mulla's Donkey and Other Friends by Mehdi Nakosteen
Notes: This story is on p. 38 of the book.