A slim jim is also a thin flexible metal bar used to open car doors. It is illegal to even posess one in some counties of the US. Well-schooled folks can open a car door in seconds. I could open my Ford Aspire (expire?) in about seven seconds using an improvised slim jim made from a metal piece from a hanging file folder. My wife had a habit of locking her keys in the car when she came home.


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    _| |  The notch can be used to pull up
   |   |  on the mechanical bar connecting
   \___/  the door lock knob to the actual lock.