I was cutting some plastic drain pipe with my Leatherman tool and slipped. Major pain and blood spurting from my finger. I had read about packing cuts with black pepper to stop bleeding. I washed my finger under flowing water, dumped about a teaspoon of pepper into the cut and wrapped with gauze and tape. Then I went back to doing yard work. 2 hours later there is no bleeding and the cut looks good.
Notes to self:
Buy more pepper
Do not use sharp knives while oblivious :-)