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1.
In the process of DP (double penetration) one man will be inserted in the woman's vagina, the other, her anus. The 'Angry Oyster' occurs when the two men's scrotums slap each other ferverently, giving the impression of the two oyster shells opening and closing quickly.
I don't care...just don't keep the Angry Oyster waiting!
by Garuman the Repugnant July 03, 2011