So the guy goes out to his car and he looks around for a necktie anddiscovers that he just doesn’t have one. He sees a set of jumper cables in his trunk.

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.”