Top Definition
A inconsiderate person that cuts you off in a boat or otherwise acting like a douchbag while operating a boat and doesn't matter if drinking or not. One that thinks they are the only ones out on the water
That douchous aquaticus just ran over our fishing lines!!!!!
#fishing #boating #douch #water #douchbag
by witness to douchous aquaticus January 14, 2012
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