A man enters a posh restaurant, wearing a shirt that is open at the collar.
He is met by a bouncer, who tells him that he must wear a necktie to gain admission.
So, the man goes out to his car, and he looks around for a necktie, and discovers that he just doesn’t have one.
He sees a set of jumper cables in his trunk, and in desperation he ties these around his neck, manages to fashion a fairly acceptable looking knot and lets the ends dangle free.
He goes back to the restaurant, and the bouncer carefully looks him over for a few minutes and then says, “Well, OK, I guess you can come in – just don’t start anything.”
Image used under a Collective Commons License from: https://www.flickr.com/photos/archer10/19983634703