I've seen people cheating on Maka Wuhu using a glitch. Near the tunnel, they have a mushroom if they are in 4th place or lower, and use the mushroom to dash into the pit near the little block of earth.
closed as not a real question by murgatroid99, LessPop_MoreFizz, Ben Brocka, StrixVaria, Jeff Mercado Apr 24 '12 at 2:25
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They are exploiting the glitch,in front of the tunnel on the right side there is no fence and you speed up and jump in the water skipping a fair portion of map.
It got very popular and it will be removed in next update.
Watch from 0:55