1. Be tied to your mother's apron strings: if someone, usually a man, is tied to their mother's apron strings, they still need their mother and cannot think or act independently.
E. g. He's 30 but he's still tied to his mother's apron strings.
2. At your mother's knee: if you learned to do something at your mother's knee, you learned it when you were a young child.
E. g. I learned to sew at my mother's knee.
3. Diligence is the mother of good luck: If you work carefully and constantly, you will be far more likely to be successful, as if luck had come your way.
E. g. Mike: I'll never get work as an actress; I always have such bad luck at auditions. Jack: Keep working at it. Diligence is the mother of good luck.
4. Everybody and his mother: Used hyperbolically to express a large number or a majority of people. I'm so jealous, everybody and his mother is going on a vacation this summer except for me.
5. Experience is the mother of wisdom: Most wisdom is gained by experiencing different things (compared to acquiring knowledge through schooling or other means).
6. Necessity is the mother of innovation
The need for something tends to spark creative thinking and action. A less common variant of the phrase "necessity is the mother of invention. "
7. The mother of all something: an extreme example of something Donny's car crash was the mother of all crashes. E. g. Hundreds will travel to Stonehenge, the mother of all places to celebrate the longest day of the year.
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