Meaning of shaggy dog story

1. The comedian told a hilarious shaggy dog story that had the entire audience laughing.
2. I can't stand listening to shaggy dog stories that go on and on without any point.
3. The movie was entertaining, but the shaggy dog story subplot seemed unnecessary.
4. My uncle always tells the same shaggy dog story at family gatherings, and we all groan in unison.
5. The book started out with a promising plot, but quickly devolved into a shaggy dog story that left me disappointed.
6. I thought the meeting was going to be productive, but it turned into a shaggy dog story with no resolution.
7. The children begged their grandfather for another shaggy dog story before bedtime.
8. The politician's speech was full of shaggy dog stories that failed to address the real issues at hand.
9. The author's writing style is known for its use of shaggy dog stories to engage readers.
10. The comedian's latest stand-up routine included a hilarious shaggy dog story that had the audience in stitches.