A unicycle enthusiast wonders if his unicycle can be properly called a bike. To avoid the four-syllable mouthful, the unicycle community (yes, there is one) sometimes calls it a uni, but for the general public, the term “bike” works. Martha reveals that she once spent a summer teaching herself to ride a unicycle, and doesn’t mind calling it a bike. Grant notes the general rule that once a word has left its etymological root, it can be used for whatever we need it for. This is part of a complete episode.