[tet68]

I understand from sources that will not be identified
that a razor blade or two held flat between the fingers
and used in a slapping motion can be quite effective.
We used to tape a nickle to each side and throw them like
a shuriken.

This guy smells of fish, might want to test those blades for toxins too.

[SauronOfMordor]

I understand from sources that will not be identified that a razor blade or two held flat between the fingers and used in a slapping motion can be quite effective.

In the Pacific Islands, the islanders would make swords by embedding shark's teeth in a thin piece of wood

Take a pair of long, flat pieces of plastic, glue them together in the plane's toilet with the razor blades sandwiched between them, edges sticking out, and you have a moderately effective sword.