One morning, a wife found a note from her husband on the fridge.

My dear wife,

You will surely understand that I have certain needs that you, being 57 years old, can no longer satisfy.

I am very happy with you and value you as a good wife. Therefore, after reading this letter, I hope you will not wrongfully interpret the fact that I will be spending the evening with my 19-year-old secretary at the Comfort Inn hotel. Please don’t be upset—I shall be home before midnight.

That night, when the husband arrived home late, he found a note on the dining table.

My dear husband,

I received your letter and thank you for your honesty about me being 57 years old. I would like to remind you that you are also 57.

As you know, I am a math teacher at our local college. While you read this, I will be at the Hotel Fiesta with Michael, one of my students and assistant tennis coach, who is also 19—young and virile, like your secretary.

As a successful businessman with excellent math skills, you’ll understand that we are in the same situation, except for one difference—19 goes into 57 more times than 57 goes into 19.

Therefore, I will not be home until sometime tomorrow.