Vengeance

If someone want to revenge to another person, they might use different kinds of methods to do it. If someone killed your relative people who are important to your life, you will revenge to him/her and make him/her die painfully and slowly. Such as a movie called "Saw", you can see from this movie. people in this film are all painfully and slowly died by many different mechanism. You can use one of the mechanism to kill someone who has killed your important person. When that person are painful, you can be cheerful in front of him/her.