This means that once something has been done, you have to live with the consequences as it can't be undone.
It means that you are giving up you cant handle the pressure anymore
The idiom "her name rang a bell" means that the name mentioned seems familiar or triggers a memory, but the person may not recall the exact details about who or what it refers to. It suggests a sense of recognition without a clear recollection.
It means that you were about to get fussed at, or have to confess something, but you were interrupted just in time. The image is of the school bell ringing to interrupt the teacher about to assign homework.
It means that something seems familiar, but you can't quite bring it to mind. The image is of a bell ringing in the distance. You might say "the name rings a bell" when you know you are familiar with someone, but you can't really remember them clearly.
RFP is not an idiom. It's an abbreviation.
It's not really an idiom. It means "what are you thinking about."
It is not an idiom, it means your nose is itching.
It means she cant dance well, and the idiom is wrong, it should be two left feet.
idiom means expression like a page in a book
It's not an idiom. It means the tip of your nostril.
"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.