Nice Tie
A guy goes into a restaurant and lounge, his shirt open at the collar,
but is stopped by a bouncer who tells him he must wear a necktie to get in.
So the guy goes out to his car and he looks around for a tie and discovers 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, okay, I guess you can come in -- just don't start anything."