A man is driving through the country one day and sees a bar. He decides to stop and have a beer or two.
As he walks in, the bartender stops him and says, "Sir, we have a dress code here. You must wear a tie.""
"A tie?", the man exclaims. "Why would I need a tie. This is just a bar."
"Sorry, sir," replies the bartender, "but we do have our requirements to enter. You must have a tie on."
The man goes back to his car. No tie. He checks the trunk, hoping he has a tie in there. No tie in the trunk. He does, however, spy a set of jumper cables. Hmmm, he thinks, maybe I can hang these around my neck and call them a tie. He REALLY wants a beer by now. He goes back in, wearing the jumper cables around his neck.
"Sir!" says the bartender, "I told you that you needed a tie!"
"Well, I DO have a tie on!"
"No, sir, those are jumper cables."
"Hey, they're hanging around my neck. They're tied in a knot. If I say they're a tie, then they're a tie!"
The bartender thinks for a moment. "OK, sir, I'll let you in this time. BUT DON'T START ANYTHING!"