If a stupid person is being stupid ... I'll ignore them ! If they're stating something apart from the truth - it's gonna come out anyway .
I'd go visit them and act all spooky
I'd tag their page and go 'Surprise!'
If anyone posted that I died, I'd take a video of myself doing stuff that is only possible for present day people to know. I'd talk about something that only I would say.
Do you know different? If not, let it be...