it means frequenting a place,
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.
Hangin' was created in 1982.
Translation: Me too, what's hangin'?
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
Simply its mean a bully.
Hangin' On was created in 1968-02.
The idiom your blood is boiling usually means that you are mad/furious.