It is a common "troll" file shared in group chats to startle friends.
When posting or sharing such files, be aware that many platforms have Safety Rules regarding "flash" content or extreme loud noises that could be considered harassment or harmful to users with certain sensitivities.
Like the classic "screamer" videos of the early 2000s, it plays on the shared internet experience of being "gotten" by a jump scare. Social Media Options BBShake.mp4
X Trends FAQ – trending hashtags and topics - X Help Center
The "BB" in the filename often hints at a suggestive or dance-related video (e.g., "Big Booty"), luring unsuspecting viewers into opening it. It is a common "troll" file shared in
"Just sent BBShake.mp4 to the group chat. Now we wait... 🍿😈"
"PSA: If someone sends you a file named BBShake.mp4, do yourself a favor—don’t open it with your volume up. Or at all. You’ve been warned." Social Media Options X Trends FAQ – trending
If you are looking to create a post about this phenomenon, here are a few directions: