... in response to Don't tell me it's urine, posted by nocomment on Jan 10, 2006They are not filled with urine, at least none that I have seen. Anyone who did so would be a fool because spraying urine into an intoxicated crowd would lead to a huge fight.
Something similar to that happenned last year. A latina who was sitting next to me was repeatdly sprayed with foam despite her assertions to stop. Her boyfriend didn't take to kindly to this and a big physical fight ensued. Imagine what would have happened if urine was sprayed instead of foam.