Geez, I debunked this when I was like 8 years old with a sink full of water.
Being in whichever hemisphere has no persistent bearing on which way the water drains; go fill your sink and swish the water clockwise as it's draining. Then repeat anti-clockwise. Both work, and it won't stop spinning half-way through to spin the "right way". Oh yea, at my Nan's house (she lives like 2 miles from me, nowhere near any equator or other hemisphere's) her water will start to spin the opposite way to mine when you empty her sink.
I thought everyone knew that water doesn't persistently drain a different way when in a different hemisphere
If these guys know this - then what the bloody hell are they doing wasting time draining water at the equator? Defeats me.