Yet another "what is this thing?" question, I kinda like these. So, whattaya think?

Device for eliminating spurious transmissions by shorting the center to braid on coax cable

Dart from a police taser

Test probe accessory for piercing wire insulation

A jig for bending/making fishhooks

Curare-tipped blowgun dart used by some of the more advanced tribes of South America

Answer: Dart from a police taser. Don't ask me how I came into posession of this "souvenir", I have the right to remain silent.