Nothing. The phrase is tongue in cheek, as if you were talking with your tongue twisted into your cheek instead of in the middle of your mouth. Tongue in cheek means you are not speaking seriously, but in jest.
It's not an idiom. The definition of "at stake" is what is being risked in the situation or venture. A stake is a share or ownership in something.
The idiom "shell out" means to pay a sum of money, usually unwillingly or with reluctance. It implies spending money on something, often more than anticipated or desired.
There is no literal idiom -- an idiom is a phrase that seems to mean one thing but actually means something else. The word "literal" means to take the words exactly as they seem to be.An idiom is a phrase particular to a language that is accepted for its figurative meaning, as in "That amazing shot blew me away." Everyone understands that this person means he was amazed. A literal idiom would be the usually humorous thing that happens when you take the idiom for its word for word, not accepted, meaning. That would mean that somehow the amazing shot actually created the air mass necessary to blow this guy away.
It means to be intelligent. The brain is between the ears.
The idiom "to coin a phrase" means to invent or originate a new phrase or expression. It is often used when someone comes up with a clever or witty saying that becomes popular.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
It is not an idiom, it means your nose is itching.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book
"Sieve" is not an idiom. See the related link.
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
Simply its mean a bully.
The idiom your blood is boiling usually means that you are mad/furious.
Nothing. You have left out part of the idiom. Perhaps you mean "your hands are tied," which means that you have no power to do anything in a given situation.
"Penniless" is not an idiom. It means that you don't have a penny to spend. It's used as an exaggeration to mean that you don't have any money.
I think it means that that person agrees with that others persons idiom and that it fit that question that the teacher or whoever asked that question.