Itching to do something verb phrase
The word "itching' can be changed to noun"itch" and this phrase can be used like this " have an itch to do somthing "
If you say that one is itching to do something, you mean he or she longs for something/to do something.
I'm itching to join a marathon in a mountainous region to admire breathtaking scenery.
She's itching to sit the test again to see if her result improved or not.
A desire to do something, which is random, sudden and unaccountable
Believe or act in accordance with your desires, usually in spite of the wants or feelings of others
Used to emphasize one's interest or eagerness to have or do something
Originally, it was said euphemistically to express the benefits of sex. Now, it is also used to express the advantages of satisfying other desires.
The origin of this idiom is not clear.