Got to thank my dad (who is part Indian) for this one...
On his 60th birthday, he received a gift certificate from his wife. The certificate paid for a visit to a medicine man living on a nearby Indian reservation who was rumored to have a wonderful cure for erectile dysfunction. After being persuaded, he drove to the reservation, handed his certificate to the medicine man and wondered what would happen next.
The old man slowly and methodically produced a potion, handed it to him, and with a grip on his shoulder, warned, "This is powerful medicine and it must be respected. You take only one teaspoonful and then say '1-2-3..' When you do that, you will become more manly than you have ever been in your life, and you can perform as long as you want."
He was encouraged. As he walked away, he turned and asked, "How do I stop the action of the medicine?"
"Your partner must say '1-2-3-4,'" he responded. "But when she does, the medicine will not work again until the next full moon."
He was very eager to see if it worked so he went home, showered, shaved, combed his hair, put on lots of cologne, took a spoonful of the medicine, and then invited his wife to join him in the bedroom. When she came in, he took off his clothes and said, "1-2-3!"
Immediately, the glory of his manhood filled the room.. His wife was so excited that she began ripping off her clothes. And then she asked, "By the way, Honey, what was the 1-2-3 for?"
And that, boys and girls, is why we should never end our sentences with a preposition!
Otherwise you will end up with a dangling participle...heh.