Top Definition
A practice done by the Unification Church to extract evil spirits from the bodies of its' members by patting/hitting/slapping their bodies while singing to traditional Unification 'holy song' "Grace of the Holy Garden".

This practice was adapted by Korean shamanism. It was developed to satisfy the sadistic members of the UC.
Oh, you can hear the UC members ansu'ing throughout all the mountains in the area nearby Cheong Pyeong.
by BruceyB August 25, 2009
A term for the anus. Often used in a anal sexual way.
I'll fuck you up your ansu!
by Sinned December 04, 2002

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