In Case You Missed Some Of The Many April Fool Articles,

here is a great one from 1939,             

 printed in Popular Science, of course in those days you could just walk into a drug store or chemists and buy the ingredients,

but nowadays even posting this prank I guess I will have to print a warning, health and safety at work!

WARNING: This is just a historical romp—so don't try it. Mercury and its compounds are toxic and can be corrosive, they can also emit harmful vapours even at room temperature, and may be fatal if heated and inhaled, so there it is.