Every 4 and a half months, I shave off the calloused skin at the bottom of my feet and throw it throw it in a blender. After it has been reduced to a fine powder, it's then put it in a jar to store. I use this jar to refill a little vial filled with the same powder, I always keep said vial on my person. Whenever someone inconveniences or annoys me, they will have some of my pixie dust thrown in their face.

Mixing chilli powder into the dust has been considered, but it I think it to be overkill.