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At one time, Jack married a woman who wanted to keep her age secret．At night, Jack asked, “My dear, how old are you?”

“Thirty．”

“Really?”

“Thirty-five．”

“Since we are couples, we’ll live together．Your answer can’t be too exact for the sake of love．”

“Forty．”

Suddenly there was a noise in the room．Jack said “Maybe a rat is eating salt．”

His wife laughed, “Nothing could be funnier, I have never heard of it for my fifty years．