Yeah, because in every European country you pretty much have to learn English and another language, only in few cases you have the option of replacing English with a different one. Plus at the end it says that it's written for a reason in Polish, and the tone with which it is written implies to me the author probably knows English and just chose not to, rather than that it's in Polish only because of the message itself. But it could be only the latter. :)

I DON'T WANT, ANYBODY ELSE!
WHEN I THINK ABOUT YOU I TOUCH MYSELF!

I dread to think where she keeps the cheesecake!

Shhhh! It's our secret plan to take over the world and make everyone and everything finnish! You are not supposed to talk about it! Just wait quietly and our brainwas... our education team will deal with you in due time. We'll make proper Finn out of you yet!

For the umpteenth time: I don't care if your hovercraft is full of eels, unless you produce proof of purchase I won't refund you.