I remember it from a couple of years ago. It happened somewhere in Northern California when a fraternity was hazing a student and he died from water consumption. The were forcing him to drink it non-stop.
The reason: Electrolyte Imbalance.
Yup. A couple years back I was helping a neighbor put on a new roof. When we started, we were both drinking literally gallons of ice tea.
I had to add in some gatorade because I was getting dehydrated. Weird that you can get that way, but if you flush out alot of electrolytes, your body will try to keep the right balance. You end up whizzing like a racehorse and get dehydrated from it.