"Ad hoc" is an idiom that refers to something created or done on a specific occasion or for a particular purpose, without any predetermined plan or structure. It can also refer to a temporary solution or measure taken to address a problem or situation.

The idiom "as to" is used to express a range of emotions, including surprise, astonishment, disbelief, excitement, or curiosity. It can be used to ask for more information, to challenge someone's assertion, or to express disagreement.

"Well Read" means to be highly educated or knowledgeable about a particular subject or field. It can also refer to someone who is up-to-date on current events and news.

The idiom "bury head in the sand" means to pretend not to notice or acknowledge something, especially a problem or situation that requires attention or action. It refers to burying one's head in the sand as if trying to hide from reality and ignore the issue at hand.

The idiom "snow under" means to work very hard or be extremely busy, often to the point of being overwhelmed or stressed. It can also mean to perform well under pressure or in a difficult situation.