For many thousands of years it was believed that people kept their bad temper in their spleen - so when your bad temper comes bursting out (in a tantrum for example) you are said to be 'venting your spleen'.
That is called as Spleen.
The spleen is the largest organ of the Lymphatic system.
the scientific name for spleen is spleen xD
A marble sized piece of extra spleen in front of the spleen.
My spleen is 9000000000000000000000000000000000000000000000000000 inches long
To be exposed
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Origin "up a storm"
No
It is a slang term from the 1930's, origin not known
fdgscgHXC
affrica (iraq
To hope for the best
Palestinian and Persian
food
Meaning he will help you out.
It is just an idiom and has no history.