It means she "lost her temper".
Take this example: A boy goes to a girl and starts talking to her. She talks to him the first day. By the next day he begins to bug her or pester her so much that she doesn't want to talk to him or listen to him either. And by the third day she cannot stand him anymore and she yells at him.
In such a situation we would say "She lost her cool by the third day."
It's not an idiom. "Cool" is a slang term meaning someone is popular or fashionable.
It's not an idiom. "Cool" is a slang term meaning someone is popular or fashionable.
it means when you are really nervous and cool at the same time.:)
It's not an idiom because you can figure it out by the context. It means they went bald.
"He lost his shirt" IS an idiom.
Meaning you snapped and got angry.
It means to get released from a gaol (jail).
The idiom, "You lost your marbles," means that you've gone crazy.
It means she got really upset or angry, and lost her temper.
That means you reacted to something negative without thinking first.
It's not an idiom. AS ___ AS___ would be A Simile ... the correct simile would be as cool as a cucumber.
It's another way of saying you're lost - as if you are out at sea where there are no landmarks to find your way. This can be physically lost or figuratively lost, as in you don't know something.