All Talk and No Trousers

What does the idiom “All Talk and No Trousers” mean?

Definition:

Prone to empty boasts

For example:

“John is all talk and no trousers. He likes to talk about how he has big ideas, but I’ve never heard him propose one.”

Notes:

You can also say, “All talk, no action,” or (U.S.) “All hat and no cattle.”

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