The polish pogostick, much like it's Swedish counter-part, is a sexual position done with one partner(most likely being female) face down rear vertical. And the other partner upright and facing there torso. The difference however is in the apparatusis used to gain momentum. The Polish pogostick uses none,or in a truely Polish scenario, the polish pogostick is done on a hard object like a table or the hood of your former best friends car.
I used to do the swedish pogo stick with my girlfriend, that is until i learned she cheated on me with my best friend, after that it was the polish pogostick on the hood of his car for her.