I'm in there with my son and neice eating a big breakfast. They sit down behind us. Very polite. Man 1 explains to Man 2 that he feels they don't have enough in common, and they're not the right temprament for one another. Man 2 is caught offguard, but thanks him for doing it in person. They quickly determine the best way to return each others items, and they hug before getting into their very expensive cars with their McDonalds coffees and going on their way.
No drama, no "I'mma kill you", nothing like that. Just two people deciding they weren't right for each other, and amicably moving on.