I have been seeing this recurring post on social media saying that Arby's got its name from the initials for roast beef (R.B.'s), and people responding "oh, that makes so much sense." Have probably seen it three times a day on Facebook and Twitter the past week.
It's a nice story, but it's not true. It's close to the truth, but the name has nothing to do with roast beef. Instead, the chain was started by Forrest & Leroy Raffel, so they named it after the initials for "Raffel Brothers", (R.B.'s) not roast beef.
And if you wanted to know what roast beef has to do with a ten gallon cowboy hat (which is the shape of the Arby's sign), turns out they originally wanted to name it "Big Tex." The name, however, was taken so they went with Arby's while still keeping the sign shape they designed for "Big Tex."
So in your next game of anything involving trivia...