Not sure if this is "prove it for fun because obviously they're lying" or serious mode, so I have several answers, none of which are bad advice and all of which

Not sure if this is "prove it for fun because obviously they're lying" or serious mode, so I have several answers, none of which are bad advice and all of which are not jokes. - Assume it's not, because it isn't. Then don't worry about it and just speak your mind. - It's better to have raged and lost (your job), than to never have raged at all? - Make friends with someone from HR / whoever deals with the responses. Ask them. - Write outrageously threatening/dangerous/offensive responses and see if the cops arrive at your desk.