تعریف و معنای "all wet"

What is the origin of the idiom "all wet" and when to use it?

The idiom "all wet" has its origins in American slang from the early 20th century. The phrase is thought to have originated from the idea that if someone is soaked or drenched, they are entirely wet. Over time, the expression evolved into a way of describing a person or thing that is completely mistaken, wrong, or unfounded. It is often used to express disbelief or to refute a statement or idea.