The story
From the video blog WorldStarHipHop, where shocking, viral videos, especially of fights, are often posted.
Etymology from Wiktionary, CC BY-SA 4.0.
Worldstar
Today it means: Exclaimed by onlookers or bystanders during an unexpected or dramatic event, especially a verbal or physical altercation, anticipating that the footage will be uploaded to the Internet and eventually contribute to its viral nature. Full definition →