Of course, the same coin could simply be flipped by each person and the second person calls whichever the outcome could be (same or different). This is still more open to being gamed, assuming the second person can affect the outcome using any of the techniques that commenters have suggeste...
As we slept soundly in our cozy Paris hotel room situated in the idyllic area of St. Germain du Pres, there was an announcement being made back in the USA alluding to a complete travel ban coming within 48 hours. Was it a game of ‘telephone’ gone horribly askew or did the announcemen...