Our petty math teacher got fired today. That made him a lot more open-minded, the bullet hit him right in his head.
I think that's a really disgusting thing to say. You keep joking about killing people; what do you mean by it?
I jest about killing people and everyone thinks it's ok, but when I say something about a woman being equal to a man everyone goes nuts.
School shootings are very tragic events and it isn't appropriate to make jokes about them since it trivializes the harm that the victims of school shootings experienced. Hearing such jokes can also bring about a lot of emotional pain for people who have had a friend or relative affected by a school shooting. Instead of joking about tragedies, it would be better to find lighter subject material to joke about so that people aren't put off by what you say and avoid your company.