Robbie in San Antonio, Texas, wonders about an expression he heard from his mother, who spent many years in Germany. If two people have the opportunity to do something, but neither of them does it, she’d say It fell between chairs. In English, we get across the same idea by saying someone sat between two stools or fell between two stools. In fact, versions of the phrases sitting on two chairs or sitting on two stools or falling between two chairs or falling between two stools occur throughout European languages, going all the way back to the ancient Roman philosopher Seneca. This is part of a complete episode.