Which episode was it?

I remember an episode ( not sure whether it was Gaki or coco rico) where there was a fight in the streets with Tanaka.
The challenge that was set involved a treadmill and a tank of water where they would run of a while the dunk their faces in the water, and at the sound of the buzzer they had to stand up and look as normal as possible.

If anyone has a link to this i would be greatly appreciated.

– 10.01.2011, 11:23 –


– 14.09.2011, 13:15 –

still no idea’s guys?