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when a large group of natives capture you, tie you up, and begin so slather mud/poop on your body,(commonly the penial area). after the mud/poop is slathered they bring in the tribe cheif who gives the victim a vigirous Hand Job.
Guy: hey man how was your trip to the Amazon?

Friend: it was great, i met some natives, they gave me a souvenier.

Guy: what was it?

Friend: an Amazonian MudBall!
by apishfiend123 March 25, 2012
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