Manchest

The action of someone telling another person that they'll do something in a situation. However, the other person listening to this promise may respond quickly by saying: "Manchest." This word itself enforces that person who made the promise to literally complete, what they said they'd do. If they don't complete their promised task to the word, "manchest," the person who said, manchest, may slap the other person in the chest due to their non compliance of their self made promise. (Manchest does not apply for things someone might do, which they can say to prevent manchest from happening. For example: I ought to, should maybe, might, etc.).