Point 3.

You are Polish when you know everything better even if you are wrong.

PS. @Zuzanna Rzeszewska, there are “pierogi” with potatoes, it is not a mystery. These are the only one which I am able to eat.

@Sviatogor, there is “herbata różana”. Although it has nothing to do with “biodro”, as it is a part of body. :) The noun “hip” has both meanings – first: part of body [biodro], second: fruit of wild rose [owoc dzikiej róży]. So simply it is “herbata różana”.