PiS

The Polish political right wing party which was founded in 2001 (and currently as of writing, rule the country), stands for 'Prawo i Sprawiedliwość', translating to 'Law and Justice', commonly hated throughout most of the country, and for pretty good reason. A common way to express anger against them is the phrase "Jebać PiS", which roughly translates to "fuck PiS".

Paweł: Hey what do you think of PiS, I think the-
Alicja: Kurwa, jebać PiS!
Paweł: Jebać PiS!