Persuasion Knife

A device, or figure of speech, used with NPC* inaction (can be in real life and virtual) that is used to sway said NPC into giving unto one's way. Can be used in a threatening way, or friendly, mostly threating.

*Non Character Player (or not you)

Person 1:Today I had to use my Persuasion Knife to get my lazy brother to mow the lawn today

Person 2:"You pulled a knife on him?
Person 1:No, a rock. It works like a knife.