Top Definition
When a person poops under the surface of a body of water (lake, river, etc), they receive extra cleansing in their anal region from carp attracted to the defecation.
-I took an aqua dump and got a Missouri Bidet in Party Cove over labor day weekend

-We forgot toilet paper on the boat, so hopefully there are carp in this lake for a Missouri Bidet
by TriTooner September 05, 2011
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