slim jim

/S L IH1 M JH IH0 M/
noun
  1. 1

    A thin strip of metal such as spring steel used to unlock automobile doors without a key.

  2. 2

    Someone or something very thin.

  3. 3

    A narrow necktie worn by teddy boys.

  4. 4

    A kind of dipole radio antenna.

adjective
  1. 1

    Very thin.

Source: https://en.wiktionary.org/wiki/slim%20jim