Police sirens have been a familiar part of films, television and video games for decades, used to signal urgency, danger or an approaching authority figure. As short clips spread on soundboards and social media, the standalone siren became a popular effect for memes, pranks and roleplay videos, where a few seconds of wailing instantly changes the mood of a scene. It remains widely used because the sound is universally recognized, needs no visual context, and works in both serious edits and comedy, alongside other meme sirens such as the social credit siren.