rat-racing n. a playful form of high-speed flying in which airplanes pursue or attempt to out-maneuver each other, similar to a game of cat-and-mouse. (source: Double-Tongued Dictionary)
Further reading
Quiz Guy John Chaneski insists that the names of modern Olympic sports resulted from changing one letter in the original names for each activity. For example, he says, the pole vault must have originated from an earlier sport in which participants...
If you skip wearing underwear, you’re said to be going commando. This bit of slang originated during the Vietnam War, when U.S. commandos had compelling reasons to do without that particular piece of clothing. Plus, Watergate salad is a...