CHWDP or HWDP (read "ha-voo-de-pe") is a frequently used Polish acronym or initialism of the Polish phrase chuj w dupę policji, literally meaning "(put a) dick in the police's ass." This anti-authoritarian and anti-police slogan, often written on walls in Poland, is used as a vulgar form of provocation against the police and authorities. The initialism was largely popularised by Polish hip hop music, where it is often used in lyrics. It is a specific expression of protest against the authorities, and against "the system" in general. It is more or less analogous to the English language expressions "ACAB" and “"fuck the police"”.