Our neighbor got a dose of acid, but I suspect it was more a mixup of nalgene bottles than an intentional dosing.
He was at a noise camp and either grabbed the wrong bottle from the pile when he left or someone confused his bottle for their own or less likely someone dosed him intentionally. Either way he was upset at taking an unexpected trip on a product from an unknown source at an unknown dosage. Thankfully everything turned out ok, but he has sworn off water bottles and plans to use camelbacks for future burns as they are difficult to tamper with in public.
Moral of the story - using a water bottle that is not easily confused with someone elses will help prevent accidental dosing, although it won't do much to prevent intentional dosing.
