When I used to work construction, I had my own 5 gal. water jug. To keep the other guys from drinking up all my water, I wrote on it "WARNING CONTAINS DIHYDROGEN OXIDE. STORE ABOVE 32 F." When a guy asked me what dihydrogen oxide was, I told him it was water. Then he asked me why store above 32 degrees. I told him, "cause it will freeze dummy!" No one ever touched it...