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It means everything and nothing at the same time. It was invented years ago by Yido, and we almost went to jail for it. One thing that the word yinkum has nothing to do with is Drugs. It has NOTHING to do with drugs, even though school officials and police thought it was.

You yinkum! (frustrated)
Ouch, my yinkum! (in pain)
Oh, Yinkum! (exlamation)
You yinkum! (frustrated)
Ouch, my yinkum! (in pain)
Oh, Yinkum! (exlamation)
etc.
by Staley Johnsen November 14, 2006
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