The vile act of crapping while in the ocean. Occasionally committed by those surfers who are too lazy and/or unmotivated to get out of the water to deuce like a normal person. In fact, some surfers deliberately do it to "mark their terrirory", or do it to mark the end their surf session, leaving it behind it as an "I was here" statement.
-"Saturday was nothing but music, beer, surfing & aqua turding." *lmao*

-"You'd want to avoid that spot in the water, that's where Ronny went aqua turding....and unfortunately he had a bout of diarrhea." *lmao*
by CactusHeart November 12, 2010
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its when you take a shit in the ocean. Usually after the doing the big brown water snake floats up next to you.
dude i was at the beach yesterday, and that mexican food fuckin' got to me. Thank god i was wearing bord shorts cuz i took the fattest fucking aqua turd in the world.
by kieran May 7, 2004
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A turd that is in composition at least 60% liquid.
Ol' BJ killed my grass with his aqua turd.
by Jim Deal July 6, 2005
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