In some current American slang it is a reference to male ejaculation; however the phrase has a very long history covering most of the time that muskets have been in use up to the present. The wad is a piece of paper put in the muzzle along with the projectile and gun powder. If the shooter is too hasty -- say in a tense battle -- they may not include the projectile. The result is a fire without the intended bullet; only the wad will fly out...a wasted shot. Hence, "shooting your wad" can mean expending your energy fruitlessly. The OED also references the wad as in a roll of paper money; in this case "shooting your wad" means blowing all your cash at once.
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.
To be exposed
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Origin "up a storm"
No
That's not an idiom - it means exactly what it says - there are twelve months in a year.
Wadsworth is English for Wad's enclosure. Wad is a nickname for Waeddi. Also, Wadsworth is a village in West Yorkshire, England, near Huddersfield.
It is a slang term from the 1930's, origin not known
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affrica (iraq
To hope for the best
It is just an idiom and has no history.
Meaning he will help you out.