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.