The plural of cactus is cacti, the plural of octopus is octopi or octopuses, the plural of hippopotamus is hippopotami or hippopotamuses but the plural of platypus is platypodes (Platypuses is also accepted). English is confusing enough without people needing to know the plural of platypus being platypodes for example you park on a driveway and you drive on a parkway, if you are shipping something in a car it is called shipment if it is on a ship it is called cargo, and there are unspoken rules like you would say the old yellow house, but never the house yellow old. I aim to change the plural of platypus to platypi, it is easier to remember and the Latin root should make it platypi, so I would like to get enough signatures to send this to webster's dictionary, even if they don`t change it if enough people say a word wrong, it becomes the right way to say it. Two relatively smart idiots.