Why Is It Called a ‘Gravy Train’?
If you know your idioms, you know that a "gravy train" can be a sweet place to be. This expression refers to a job or situation that provides easy money with little or no effort. By definition, "gravy train" means "a much exploited source of easy money," as in, "He's
been riding the gravy train ever since joining that startup." The idiom is typically used to suggest that the rewards might not be entirely deserved, or that something questionable is happening behind the scenes. But it can also simply mean that someone is being well paid for relatively little effort....
