Origin:
The phrase originates from the days of sailing ships, where a ship's arrival could bring a cargo of valuable goods, making the owner and crew wealthy.
Example:
* "I'm still waiting for my ship to come in, but I'm not holding my breath."
* "She finally hit it big with her new invention, and her ship finally came in."
Note:
The idiom is often used in a humorous or ironic way, as it implies that success is something that happens by chance, rather than through hard work or effort.