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a black kisses them, and they turn black.
'Cause once you go black, you never go back.
because you smoke weed...
cause GOD made them like that
Oxidation
An element called Dolomite can turn anything black.
The acidity in skin has tendency to cause silver to turn black or green. This is a corrosive agent that can be cleaned with a quality silver cleaner.
when blood dries, it can get pretty dark and look black. and if its dirty it could look black.
If you have a copper float ball that will do it
It is the high temp and the high return Pressure inside the injector that causes the fuel To turn black
Cause once you go black you ain't never go back
Yeah, certain ingredients can turn your stool black. I have noticed that particularly when I have taken Pepto-Bismol.