A husband wrote the following letter for his wife and left it on the dining room table:

'To My Dear Wife.

You will  surely understand that I have certain needs that you, being  54 years old, can no longer satisfy.

I am very happy  with you & I value you as a good wife.

Therefore,  after reading this letter, I hope that  you will not wrongly  interpret the fact that I will be spending the  evening

with my 18 year  old secretary at the Comfort Inn Hotel.

Please don't be  upset - I shall be home before midnight.'

When the man came home late that night, he found the following letter on the dining room table:

‘My Dear Husband.

I received your letter and thank you for your honesty about my being 54 years old.

I would like to  take this opportunity to remind you that you  are also 54 years old.

As you know,  I am a math teacher at our local  college.

I would like to  inform you that while you read this, I will be at  the Marriot Hotel with Michael, one of my students.

He is young,  virile, and like your secretary, is 18 years  old

As a successful  businessman who has an excellent knowledge  of Math, you will understand that although it may appear

that we are in the  same situation, there is one mathematical difference:

'18 goes into 54 a lot  more times than 54 goes into 18.'

Therefore, I will not be home until sometime tomorrow!!!.