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1. Copulation with non-human primates such as chimpanzees and baboons.
2. The state of being primary, preeminent, or more important.
"An odd urge of primacy washed over him as he marveled at the rainbow colors of the baboon's ass."

"Son, tell me for true: Have you ever engaged in primacy?"
by Poppa McPoyle November 05, 2013
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