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The finish of a Blumpkin- When you are taking a poo and getting a blow job at the same time. A Royal Evacuation is the point of orgasm when you lose your load from both sides.
My girl came into the bathroom while I was taking a poo. She got frisky and started giving me mad head. When I came, I called it a royal evacuation.
by c8e June 21, 2007
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