I hope your "water gun" is made entirely of polypropylene, neoprene, polytetrafluoroethane, polyvinyl fluoride, wax, lead, and/or polyethylene.
And that you're wearing a chemical protection suit with respirator while playing with it. And that you are well aware of wind and weather conditions. And that you take care to keep it out of the environment.
Seems like one of those things that would be more dangerous to the wielder than anyone else.
