Little is documented about the original recording behind yanyantuuwu police, so its history is mainly an online one. The short loop spread through soundboards and short form edits where a catchy nonsense hook works better than a long sample. Creators kept reusing it for pretend police moments, caught in the act jokes and over the top reactions because the chant is memorable in under five seconds. Its appeal has less to do with a known source and more with timing, repetition and how instantly it signals a silly emergency.