There was this Mathmatics Professor, and he was not feelin' well with his mariage. One day, he e-mailed his wife and said, "Dear, you are 54, and there are some things that you just can't provide for me. I hope that you are not mad or offended by this letter, but by the time you read this, I will be in the Ridge Motel with my 18 yr old Student Assistant. I will be home tonight!"
When he got to the Hotel, there was a fax there waiting for him that read, "Dear,
you too are 54 yrs old, and I just wanted to let you know, that by the time you read this,
the 18 yr old plumber that stopped to fix the drain and I are havin' an affair. Since you
are such an esteemed Mathematics Professor, you will appreciate that 18 goes into 54
many more times than 54 into 18! Don't wait up!"