Someone is complimenting your intelligence.
It is a slang term from the 1930's, origin not known
A hot head is someone who loses control of their anger easily.
Happy accident isn't an idiom since the words do not mean something figurative. They are literal. It more than likely came from the definition of serendipitous. It is an accident that makes you happy.
it means pain only exists if you want it to exist
You gain "brownie points" by doing nice things for people who will be able to help you in the future.
to want to do something; a wanting to entertain oneself
To feed your brain means to gain more knowledge. A related idiom is food for thought, and that is something to consider or ponder. "You should go to the library and feed your brain."
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.
It means, well like insane; cuckoo; or in other words, your brain is out of order.It means he is nuts, he is crazy, he is not normal
If you have a good head on your shoulders, think what that could mean. Your head is where your brain is. If you have a good brain, you must be able to think pretty well. So having a good head on your shoulders means you're a good thinker.
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
eat your desk means :it's time to work or time for hard work ,time to use your brain .it's the best and own answer for this question