I have read a load of rubbish on here about the definition of the word, its not Sharmone, its charmon and is actually Michael Jackson's artistic variation of singing "COME ON". I found this out in 1987 after the Bad single came out. I thought everybody knew this, why post things as a fact when they are completely wrong.

An informal Michael Jackson way of greeting folk. And if you dont know then get a life

Michael Jacksons word. Has no meaning. He just says it now and then