There is a good reason some inventions do not make it big, either coz they suck or are seriously dangerous! I'm going to wait for the second generation of this - It'll be cheaper, lighter, and you'll be able to go twice as far before you die!
Looks like somebody didnt get their meds today - WTF!!! Seriously who does this kind of thing? At what point in life does it cross your mind that you could eat 3 tampons dunked in water in under 1 minute?
So how the hell does this work then? 'Water goes in, water goes out - water goes up, water comes down' - This is about as much visual WTF as your brain will ever be able to handle before it explodes with "ARRRRRRRGHHHH!"