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Is referenceced to those with pure blood-lineof European royal decent.

Singal hand murderer's thumbis a indicator of a break in genetic trait or half blood.

Double hand thumb formality is the highest indicator of pure royal genetics.

Those who possess royal thumbs are known to be extremely combative, intelligent, and has animalistic behavior.
He won again sir, of course he did ...

Huh , the man has royal thumbs !
by Chatterboxnewz April 19, 2018
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