The idiom 'big shot' refers to an important and influential person. The origins of the term dates back to the 1920's when it was used to describe gangsters.
It is just an idiom and has no history.
Palestinian and Persian
food
Meaning he will help you out.
The origin of the idiom finger in every pie is unknown. The saying means being involved in a lot of things or knowing about a lot of things.
No
To be exposed
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Origin "up a storm"
That's not an idiom - it means exactly what it says - there are twelve months in a year.
It is a slang term from the 1930's, origin not known
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affrica (iraq
To hope for the best
Palestinian and Persian
food
Meaning he will help you out.