You Need A Tie

.
This guy wants to go into this hip new nightclub but the bouncer says, "Sorry, bud, you need a tie to enter this place."

Our hero goes back to his car and rummages around, but there's no necktie to be found.

Finally, in desperation, he takes his jumper cables, wraps them around his neck, ties a nice knot, and lets the ends dangle free.

Back to the nightclub he goes, where the bouncer takes a long look at him and says, "Well, OK, I guess you can come in. But don't start anything."
.