These aren't the clean,映画の友特別編集 最新ポルノ映画 衝撃特写集 corporate Olympic Games that will hit Rio de Janeiro on Friday.

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For the last 12 years, Wattoluempiade, also know as the Mud Olympics, has hosted amateur athletes competing in events that seem traditional -- except for the thick layer of wet, slippery mud.

Think of a soccer game played on a muddy field, taken to the extreme.

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With 46 teams registered, hundreds of so-called 'mudletes' competed Saturday in sports such as soccer, handball and volleyball. The events took place in the mud flats at the mouth of the Elbe river on the North Sea in Brunsbuettel, Germany.

These athletes are getting dirty for a good cause -- all proceeds are traditionally donated to the Schleswig-Holstein Cancer Society.

Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Participants of the "Wattoluempiade", (watten Olympics) vie for the ball during a handball match in the tidelands of the Northern Sea on July 29, 2012 in Brunsbuettel. Athletes are called to fight in several disciplines including soccer, volleyball and a modified version of handball in the muddy conditions. AFP PHOTO / PATRICK LUX (Photo credit should read PATRICK LUX/AFP/GettyImages) Credit: PATRICK LUX/AFP/GettyImages Original image has been replaced. Credit: Mashable Participants of the "Wattoluempiade", (watten Olympics) vie for the ball during a footbal match in the tidelands of the Northern Sea on July 29, 2012 in Brunsbuettel, northern Germany. Athletes are called to fight in several disciplines including soccer, volleyball and a modified version of handball in the muddy conditions. AFP PHOTO / PATRICK LUX (Photo credit should read PATRICK LUX/AFP/GettyImages) Credit: PATRICK LUX/AFP/GettyImages Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Participants of the "Wattoluempiade", (watten Olympics) vie for the ball during a handballmatch in the tidelands of the Northern Sea on July 29, 2012 in Brunsbuettel, northern Germany. Athletes are called to fight in several disciplines including soccer, volleyball and a modified version of handball in the muddy conditions. AFP PHOTO / PATRICK LUX (Photo credit should read PATRICK LUX/AFP/GettyImages) Credit: PATRICK LUX/AFP/GettyImages BRUNSBUETTEL, GERMANY - JULY 28: Participants covered in mud during the playoff in the volley ball portion of the mud flats olympics (Wattoluempiade) on July 28, 2013 in Brunsbuettel, Germany. The annual event takes place in the muddy tidal flats common to the north German coast and includes football, handball, volleyball and mud sledding. (Photo by Patrick Lux/Getty Images) Credit: PATRICK LUX/AFP/GettyImages BRUNSBUETTEL, GERMANY - JULY 28: Participants enjoy a bath in mud after a playoff in the mud flats olympics (Wattoluempiade) on July 28, 2013 in Brunsbuettel, Germany. The annual event takes place in the muddy tidal flats common to the north German coast and includes football, handball, volleyball and mud sledding. (Photo by Patrick Lux/Getty Images) Credit: Patrick Lux/Getty Images Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable Original image has been replaced. Credit: Mashable