If you've got someone who just won't leave you along, even though you said it was over months ago and they keep stalking you both on and offline, then this is a fail safe way to get them to leave you the hell alone.
We've seen it in many films over the years, from Back to the Future to Terminator and beyond. They told us that that was all it was: fiction. But now , finally, here's undisputed proof that time travel does exist. Mind = blown.