nautical signal flag (noun)

1. Why did the nautical signal flag go to therapy? Because it had too many mixed signals!

2. In ancient Greek mythology, sailors used nautical signal flags to communicate with the gods during their sea voyages.

3. According to religious texts, the prophets of old used nautical signal flags to convey divine messages to their followers.

4. In a futuristic world, spaceships communicating through nautical signal flags become a common sight in science fiction literature and movies.