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When you are so dumbfounded in something that occurred.
John: I'd tell you a chemistry joke but I know I wouldn't get a reaction.
Bill: smh(shake my head)
by trybefore January 12, 2016
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2
When your head goes from the left side to the right and vice versa consecutively because of shame
Do you seriously not know what shaking your head is shake my head is a simple term guys
by Shogunyan February 08, 2016
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