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.
The idiom "tongue-in-cheek" means that someone is saying something jokingly or insincerely, often with a humorous or ironic undertone. It implies that the speaker does not intend their remarks to be taken seriously.
The idiom "at stake" means that something important or valuable is at risk or in question. It implies that the outcome of a situation will have significant consequences.
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.
A literal idiom is a phrase or expression that has a straightforward, concrete meaning that is different from its intended or idiomatic meaning. For example, "kick the bucket" is a literal idiom that means to physically kick a bucket, but its idiomatic meaning is to die.
The idiom "to have something between the ears" means to be intelligent or smart. It implies that someone has a good understanding or knowledge of a subject.
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 is not an idiom, it means your nose is itching.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
"Sieve" is not an idiom. See the related link.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book
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.
"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.
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.
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.