> In return, I promise to continue working to stop Polish people from pluralizing potato chips as "chipsy".

Finns are great at this as well. Some examples:

  chips - sipsit

  shorts - shortsit

  donut, donuts - donitsi, donitsit

  ribs - ribsit (as in the food)

  wings - wingsit (likewise)

and so on. These are all basically established loans by now.

Then there's the recent abomination that seems to be getting popular as there's no established word for a mobile app yet:

  app, apps - äpsi, äpsit