The initial
test pee after getting into a swimming pool to see if it contains a urine-indicator dye that turns the pool
water blue or cloudy, thus indicating the location/catching
people peeing in the pool.
Shortly after getting into my
boss's pool, I squeezed out a litmus piss to check to see if that
bastard added a chemical to the
water. Once I was in the clear, I then diluted out the chloride by pissing all over and slowly swimming away.