Then, what's an idiom? An idiom is a group of words whose meaning is different from the meaning of the individual words.
There are a large number of idioms in English. Some of them are used more often than others. It can be a good idea to use some idioms in your writing. Sometimes only an idiom can convey what you really want to say, especially when you're desperate to hit the nail on the head.
Idioms with 'wall' are just such useful idioms, such as 'drive/send somebody up the wall', 'climb the