Grammar lesson:

On his 74t birthday, the wife gave the husband got a gift certificate for the medicine man on the nearby reservation.  This medicine man had a miraculous cure for erectile dysfunction.  

The husband drove to the reservation, presented his certificate.  The Indian slowly, methodically produced a small vial of potion, gripped the husband strongly on the shoulder, and warned, “This is powerful medicine, and it must be respected.  You take no more than one teaspoonfull, and then you say out loud, “1-2-3.’  Once you do that, you will become manlier than you have ever been in your life and you can perform as long as you want.”

The old man was encouraged, but as he walked away, he asked, “How do you stop the medicine from working.”   The medicine man responded, “Your wife must say the words, 1-2-3-4.  But when she does, the medicine will not work again until the next full moon.”  

Eager, the husband dashed home, showered, shaved, took a spoonful of medicine, and invited his wife into the bedroom.  When she came in, he took off his clothes and said, “1-2-3.”  Immediately he was the manliest of his men, and his wife, excited, began throwing off her clothes, and asked, “What was the 1- 2-3, for?”

And the lesson is: a sentence should never end  with a preposition, because we could end up with a dangling participle