A left-handed monkey wrench

Every new guy in the army is asked to go get something that doesn’t exist. For example, a left handed monkey wrench. It is a way to prank the new person.
The term “monkey” was frequently applied in the late 19th and early 20th Century to mechanics, as in the term “grease monkey”. That may account for the popular name Monkey Wrench by which this tool is commonly known. 
On a standard monkey wrench the adjuster nut is righty-tighty, lefty-loosey. In other words, you turn it to the right to tighten the wrench and to the left to loosen it. However, in order for this to happen, the threads on the adjuster bolt must be left-hand. Because of the standard right-hand threads on the adjustor bolt, it becomes an awkward lefty-tighty, righty-loosey operation. 
A left-handed monkey is an intelligence test, so you could just feel easy if you are a new person, just relax and enjoy the sense of humor. ;)

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