The exact source of this clip is not clearly confirmed from the available information, but it circulates online as a short reaction sound centered on the phrase “It’s Chicago.” Its popularity comes from how easily the line fits meme edits about city culture, rough moments and instantly recognizable local energy. Short voice clips like this spread well on soundboards, reposted videos and reaction edits because they are fast to place, easy to understand and flexible across many different kinds of joke formats.