Peja, real name Ryszard Andrzejewski, is a veteran Polish rapper from Poznań and co-founder of the hip hop group Slums Attack, whose album Szacunek Ludzi Ulicy is echoed in the tags for this clip. Ja pierdole itself is a common Polish vulgar exclamation, roughly expressing stunned swearing at something unbelievable or annoying. Shortened to less than a second, his version travelled beyond rap fans onto Polish soundboards and meme edits, where it now works as a quick native-language alternative to English reaction shouts.