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A Pina Colonic is a sexual expedition in which a man first ejaculates into his partners asshole, then pops a straw and drinks from it. Best enjoyed with coconut shavings and a wedge of fresh pineapple.

(term obviously derived from combining pina colada and colonic.)
"Man, that Pina Colonic was just what I was craving"
by Hot Dickins March 15, 2008